Shrank or Shrunk? The Past Tense of Shrink — and the Takeover Already Underway

You're doing dictation practice on a conversation about clothes. The speaker drops a line, you write it down as "My jumper shrink in the wash," and the checker underlines the third word in red. The real sentence is "My jumper shrank in the wash." You caught the right number of syllables, the right initial consonant, the right final consonant cluster, and slipped on a short vowel sitting in the middle. Quick answer first: the simple past of shrink is shrank, and the past participle is shrunk. There's also a third form, shrunken, and it can't substitute for shrunk.

That's the standard answer, and it's also where every other page stops. The hard part lies in two things that verb conjugation tables don't tell you. First, the line between shrank and shrunk is blurring in real English: you'll hear plenty of native speakers say "it shrunk" in a spot that should be shrank, and a famous 1989 movie took that exact line as its title. Second, the three forms shrink, shrank, shrunk differ by exactly one short vowel wedged between two consonant clusters that are hard to hear.

This article walks through the whole chain: the form table for shrink, the i-a-u vowel-shift series it belongs to together with sing and sink, when it's shrank and when it's shrunk and where shrunken fits in, a listening section with all three forms placed side by side, the phrases commonly written in the past form, and the most frequently repeated mistakes.

• The form table for shrink, and the i-a-u vowel-shift series
• Shrank, shrunk, shrunken: three forms, three places
• Hearing shrank and shrunk in real speech
• Common phrases with shrank and shrunk
• Mistakes Vietnamese learners commonly make with shrink
• Quick exercise
• Frequently asked questions

The form table for shrink, and the i-a-u vowel-shift series

Five main forms. The phonetic transcription column follows American pronunciation, and for this verb British pronunciation doesn't differ significantly.

Look at the transcription column and you'll see the whole story packed into a single word. The initial consonant cluster /ʃr/ stays the same across all three forms. The final consonant cluster /ŋk/ also stays the same across all three forms. The only thing that changes is the vowel in the middle: /ɪ/ becomes /æ/ becomes /ʌ/. All three vowels are short, all three are squeezed between two difficult consonant blocks, and that's why the listening part of this article is far harder than the rules part.

shrink isn't alone. It sits in a series of old strong verbs that shift their vowel in exactly the order i, a, u: sing with sang and sung, ring with rang and rung, drink with drank and drunk, swim with swam and swum, begin with began and begun, sink with sank and sunk, spring with sprang and sprung, stink with stank and stunk, and shrink with shrank and shrunk. This is a real series, not a mnemonic someone made up, and knowing one member lets you guess the rest.

But this series is cracking. In spoken English today, some members have the third form encroaching on the second form's spot. The clearest case is sink: you hear "the boat sunk" everywhere, including on the news, even though the written standard is still "the boat sank." shrink is heading down the same road and perhaps further: "my shirt shrunk" is common enough that many native speakers don't find it the least bit odd. sprang with sprung and stank with stunk are the same. At the other end of the series, sing and drink are barely encroached on at all: "I drunk it" still gets flagged as wrong immediately.

What does that mean for you. It means shrank is still the form you write in an exam, in an email, in any text that gets graded, while shrunk in the simple-past slot is something you need to recognize when listening, not something you imitate. This is a very specific situation in learning to listen: your ear has to be wider than your pen.

The companion articles in this series will save you time, since each one sets a different trap. The past tense of sink is the closest parallel case, sank getting encroached on by sunk through the exact same mechanism as shrank being encroached on by shrunk. The past tense of drink is the other end of the series, where using the third form as the simple past is still clearly considered wrong, so it shows you where the standard line sits. The past tense of sing shares the same vowel shift but has no final /ŋk/ cluster, so comparing the two shows you exactly which part of the consonant cluster is what trips up the ear. And the English grammar article is the place to see where this whole series sits within the tense system.

Shrank, shrunk, shrunken: three forms, three places

The shortest rule: shrank stands alone, shrunk never stands alone, and shrunken never follows have. shrank is the simple past, it serves as the main verb by itself. shrunk is a participle, it needs have, has, had, or be in front of it. shrunken is an adjective, it stands in front of a noun.

The fourth row is the one worth pausing on longest, because it's not wrong in the ordinary way. "The budget shrunk last year" is a sentence you'll read in newspapers, hear in podcasts, and see in native speakers' text messages. It gets marked wrong on exams and in formal proofreading, but it doesn't make anyone misunderstand. This is the kind of mistake you need to know how to recognize, not one you need to avoid hearing.

shrunken, meanwhile, does something else entirely. It's an adjective, describing a state that has already shrunk and stayed that way, usually carrying a negative shade of withering or shriveling. The six rows below separate out the meanings and the forms of shrink, because this verb carries more meanings than you'd think.

The two rows shrank from and shrank back are easy to overlook because they have nothing to do with clothes or size. shrink from something means to avoid, to not dare face something, and it shows up often in formal writing: "The report does not shrink from naming names." shrink back involves actual movement, someone physically pulling back. Both conjugate exactly the same way: shrank in the simple past, shrunk after have.

The last row of the table is a fairly common slang noun in American English, and it has nothing to do with shrinking in size. You'll come across it in movies and everyday podcasts, so it's worth knowing beforehand so you don't end up guessing mid-sentence.

Hearing shrank and shrunk in real speech

This is the part conjugation tables never touch, and it's the part that decides whether you transcribe correctly or slip up. On paper, shrink, shrank, shrunk are three clearly different words. In speech at normal speed, they differ only by one short vowel squeezed between two consonant clusters, both of which are hard to hear.

The final cluster /ŋk/ loses its release when it's followed by a consonant. In "shrank back," the /k/ sound isn't released, just an extremely short choked gap remains, and the phrase rings out as "shrang-back." In "shrunk to nothing," the /k/ sound dissolves into the following /t/, coming out as "shrung-tuh nothing." A learner hunting for a clear /k/ sound won't find one anywhere.

The three forms differ only in one short vowel that isn't drawn out. /ɪ/ in shrink sits high and front, /æ/ in shrank sits low and front, /ʌ/ in shrunk sits mid and back. In a slow sentence these three sounds stay distinct. In a fast sentence the vowel gets squeezed between /ʃr/ and /ŋk/ and loses most of its length, so the distance between them shrinks a lot.

The initial consonant cluster /ʃr/ has no equivalent in Vietnamese. It's a fricative sliding into a retroflex-ish glide, and a Vietnamese ear tends to sort it into s or tr. Once the front of the word is blurred, the ear has no anchor left to locate the vowel right after it, and the whole word turns slippery.

has and have before shrunk are almost invisible, and worse than that. "It has shrunk" in real speech is "it's shrunk", and the /s/ sound of 's runs straight into the /ʃ/ sound of shrunk. The two sounds sit so close together that they merge into one, and what you actually hear is "it shrunk". This is exactly where the encroachment mentioned in the section above has a partly acoustic cause: the listener can't resolve the /s/ there, so they take in shrunk as a simple past form.

shrunk rhymes tightly with drunk and sunk. When the initial consonant is blurred because the preceding word ends in a consonant, these three words are left with an identical-sounding rhyme. "The market has shrunk again" and a sentence with drunk running through it hit the ear as nearly the same shape, and context is the only thing that separates them.

shrinking, or clipping the -ing ending down to -in. "a shrinking market" in relaxed speech becomes "a shrinkin market", and once the ending is clipped, shrinking loses an important identifying anchor, leaving only the front part that was already blurred to begin with.

Below are three columns: the sentence on paper, the sentence in the ear, and the sentence learners commonly mistranscribe. Dictionary phonetic symbols aren't used in the middle column — that spot simulates the actual sound of fast speech.

Looking at the third column, you can see four different kinds of error, not just one. Rows one and six are vowel errors: the ear catches the consonant frame but returns the base form because that's the most familiar form. Row two is a word-boundary error, the /s/ sound of 's gets swallowed by the /ʃ/ sound, and the result is a sentence that plenty of native speakers write too. Rows three and four are initial-consonant errors: /ʃr/ blurs and the ear fills in with a rhyming word it knows better. Row five isn't a listening error at all but a rule error — the transcriber heard shrank correctly but wrote down the form they see more often.

While doing dictation practice on WELE, you see this chain repeat sentence after sentence. Once you finish transcribing a sentence, you immediately see which word of yours doesn't match the transcript. When the underlined word is shrank but you wrote shrink, you get a piece of information that reading a verb conjugation table never gives you: your ear caught both consonant blocks correctly and slipped on the vowel in the middle. That's a very narrow diagnosis, and narrow things are trainable, because you know exactly which part of the sentence to listen to again.

With shrink, this loop adds one more thing. Because shrunk really does show up in the simple-past slot in native speech, there will be times the transcript has shrunk while you wrote shrank, and vice versa. That's not a moment to get frustrated — it's a moment to note a fact about real English: the written standard and speech habits don't line up for this verb. If you want to understand why the sounds run together instead of blaming your listening, the article on connected speech explains the mechanics of linking and dropped sounds across a whole sentence. And the podcast library comes with transcripts attached, enough for you to review every sentence you just transcribed.

Common phrases with shrank and shrunk

shrink has a handful of real phrasal verbs and a fairly tight set of fixed combinations, especially in economic news and in talk about clothes. The thirteen rows below are blocks you'll hear as a whole chunk rather than word by word, written in past or participle form so you get used to their look.

The last two rows in the table are fixed phrases, and neither accepts any other form. Nobody says "a shrunk head", and nobody says "a shrank violet". Once a phrase has set solid, it keeps its form no matter the context, and the only way to use it correctly is to learn it as a whole block.

There's a detail worth noticing in the row the economy shrank. Changing the form changes the sense of time. "The economy shrank last quarter" places the event at a closed point, in a reporting-back kind of way. "The economy has shrunk" talks about a condition that still carries through to now, and the sentence carries a warning tone rather than a statistical one. When listening, the marker that distinguishes the two sentences is exactly the has that gets contracted up front — that is, precisely the part most likely to disappear in fast speech, and with shrink it also gets swallowed by the initial sound of shrunk itself.

Mistakes Vietnamese learners commonly make with shrink

shrinked. This is the error of reflexively adding -ed to every verb. shrink never conjugates by the rule. There's only shrank and shrunk — no shrinked, no shranked, no shrunked.

Using the past form after did. "Did the sweater shrank?" is wrong, even though it feels very logical to someone who just memorized the conjugation table. did already carries the past meaning, so the verb goes back to its base form: "Did the sweater shrink?" This mistake tends to show up right when you're concentrating hardest on remembering that the past of shrink is shrank.

has shrank. This is the reverse of the more common error below. After have, has, had it's always shrunk. "The list has shrank" is wrong, "The list has shrunk" is right. If you tend to get this direction wrong, keep a short anchor phrase in mind: if there's has, there's u.

has shrunken. shrunken is an adjective, it doesn't follow have, has, had. "The town has shrunken" is wrong, "The town has shrunk" is right, while "a shrunken town" is correct and carries an added sense of decay. This mix-up often comes from comparing it to drink and drunk, but shrunken isn't some fourth form of the verb.

Taking shrink from literally. "He shrank from the task" doesn't say he got physically smaller. It means he avoided that task. This is a phrase that shows up often in formal writing and in academic reading passages, and reading it in the physical sense throws off the meaning of the whole sentence.

Use shrink for every kind of decrease. shrink means to reduce in size or scale. When a price goes down, use fall or drop; when a quantity goes down, use decrease or go down; when volume goes down, use turn down. "The price shrank" sounds very odd, while "The price fell" is what people actually say. shrink suits things that have shape or scale: clothes, markets, populations, budgets, distances.

Here's another thing that belongs in the category of "heard but not usable." "It shrunk" in the simple past position turns up densely in spoken English, in headlines, and in the title of a famous 1989 movie that a lot of Vietnamese people have watched. Hearing it doesn't mean it's usable. In an exam, in a work email, in any text that gets checked, the simple past form that's marked correct is shrank.

Quick exercise

Eight sentences, fill in shrink, shrinks, shrank, shrunk, shrunken or shrinking. The answers are below, but only look after you've done them all.

1. My favourite shirt ______ in the dryer last week.
2. Did the wool ______ when you washed it?
3. The company has ______ by half since 2019.
4. He ______ back when the dog barked.
5. She was wearing a ______ old cardigan.
6. The list of candidates is ______ every week.
7. Her savings had ______ to almost nothing.
8. She never ______ from a difficult conversation.

Answers: 1. shrank. 2. shrink. 3. shrunk. 4. shrank. 5. shrunken. 6. shrinking. 7. shrunk. 8. shrank.

Sentences 2 and 5 are worth pausing on. Sentence 2 has did in front of it so the verb goes back to the bare infinitive, and it's the one people get wrong most often because it sits right after a sentence that needs shrank. Sentence 5 tests something else entirely: shrunken is an adjective that stands before a noun, and if you fill in shrunk there the sentence sounds clearly wrong to a native speaker. If you missed these two, section two of the article is worth another read.

Frequently asked questions

What's the past tense of shrink?

The simple past of shrink is shrank, and the past participle is shrunk. shrank stands alone as the main verb, while shrunk always comes after have, has, had or be.

Shrank or shrunk, which one to use?

Check whether there's an auxiliary verb in front of it. If there's have, has, had, use shrunk. If nothing comes before it, use shrank. "It shrank yesterday" is correct, "It has shrunk" is correct, "It has shrank" is wrong.

Why do so many people say "it shrunk"?

Because within the i-a-u verb group, the participle form is encroaching on the simple past slot for several members, and shrink along with sink are the two cases that have gone furthest. There's also an acoustic reason: when "it's shrunk" is said quickly, the /s/ sound of 's gets swallowed by the /ʃ/ sound, and the listener takes in shrunk as the standalone form. In formal writing, shrank is still the standard form.

What is shrunken and when is it used?

shrunken is an adjective, placed before a noun, describing something that has shrunk and stayed that way, often with a worn-out connotation: a shrunken jacket, a shrunken city, a shrunken head. It never comes after have, has, had.

Why is shrank so often misheard as shrink?

Because both share the same initial consonant cluster /ʃr/ and the same final consonant cluster /ŋk/, differing only in a short vowel squeezed between those two blocks. In fast speech the vowel loses most of its length, so the gap between them shrinks. The fix is to listen repeatedly to the actual pair shrink and shrank in real sentences, not to reread the rule.

How long does it take to learn to hear the i-a-u verb group?

You can grasp the rule part in one sitting, since the whole set follows a single pattern. The ear part depends on your current listening level, and the most realistic way to measure it is to transcribe a few dialogues and see which vowels you still miss. If you check your listening level right now, you'll have something to compare against in a few weeks.

You can read the form table for shrink in thirty seconds, and that's the easiest part of this page. The rest — the fact that the three forms differ by only a short vowel, and the fact that shrunk is encroaching on shrank's territory in the very English you hear every day — only really sinks in once you transcribe something wrong and see where you slipped. Pick a short clip and try dictation practice on a passage with shrank or shrunk, then go back to the table at the top of the article and see whether the phonetic column still looks dry.