Silent Letters in English: The Complete Chart of Every Letter Group

You see the word Wednesday and read all three syllables. A native speaker reads two. You see the word island and try to pronounce the s. That s has never been pronounced, and honestly it shouldn't even be in the word.

English is written one way and read another so often it's become a familiar joke. But most of that mess follows rules, and the rules are tighter than you'd think. Learn about ten groups of silent letters and you can handle almost every common word you'll run into.

This page lists each group in full with IPA transcription, explains briefly why English ended up this way, and — most important for anyone training their listening — shows how silent letters make you mishear, not just misread.

• What a silent letter is
• Overview table of silent-letter groups
• Each silent-consonant group with IPA
• The gh group, a special case worth learning well
• Silent vowels and the final e
• Why English has silent letters
• Words with two equally correct pronunciations
• Silent letters and listening — where it actually hurts
• Quick answers

What a silent letter is

A silent letter is a letter that's present in the spelling but doesn't correspond to any sound when the word is spoken. It's different from a letter pair that forms a digraph — for instance, the t and h in think aren't "silent h"; they're a pair that together produces the sound /θ/.

Silent letters aren't scattered randomly. They cluster in a handful of fixed positions: at the start of a word before another consonant, right after a consonant from the same family, or inside loanwords that still keep the spelling of the language they came from. That's why you can learn them by group instead of word by word.

A note on the transcriptions in the tables below: British English is the default, and places where American English clearly differs are marked in the notes column. The slashes are standard IPA notation, and an apostrophe placed before a syllable shows that the stress falls on that syllable. If this notation is still unfamiliar to you, the English pronunciation section explains the whole IPA chart.

Overview table of silent-letter groups

This table is for quick reference. The middle column is the position where that letter usually goes silent — learn the position and you can guess new words.

Each silent-consonant group with IPA

Silent b

Two positions: after the letter m at the end of a word, and before the letter t. The second group has only a few words, but they're all very common ones.

Silent k

The tidiest, most memorable group: k right before n at the start of a word is always silent, with no exceptions worth mentioning.

Silent l

This group causes the most errors for Vietnamese learners, because the l is very visible and your mouth wants to say it. The four words should, would, could belong to this group and turn up constantly in speech.

Silent w

W is silent before r at the start of a word, and silent in a small group of words containing h.

Silent t

T is often silent when sandwiched between s and l, or between s or f and the ending en.

Silent h

H is silent at the start of a small group of French-origin words, and silent after g or r.

Silent p

Almost this entire group is borrowed from Greek, where the clusters ps and pn at the start of a word are read as just the second letter.

Silent d, g, n, c, s, u

Six small groups lumped together — each has only a few words, but every one of them is used daily.

The gh group, a special case worth learning well

The cluster gh deserves its own section because it has two completely different fates. In most words, gh is entirely silent. In a small but very common group, gh is instead pronounced as /f/. There's no rule that lets you predict which group you're dealing with, so the second group has to be memorized.

A usable little trick: the group pronounced as /f/ is mostly short, one-syllable words ending in ough or augh. But though and through also end in ough and are silent, so this trick only narrows things down — it doesn't give you certainty.

Silent vowels and the final e

Learners tend to think only of consonants when it comes to silent letters, but the most common silent letter in English is actually a vowel: the e at the end of a word.

This e isn't pronounced, but it isn't useless either. It makes the vowel before it longer or changes its quality. Compare the two columns below and you'll see immediately what it's doing.

This is why beginners often mispronounce very basic words. Seeing the e, they want to voice it, and voicing it turns the word into two syllables. If you're rebuilding your foundation from scratch, the English alphabet page has a section separating letter names from letter sounds, exactly where a lot of people get confused.

Why English has silent letters

The short answer: English spelling froze while pronunciation kept moving. The four reasons below together explain almost all the groups above.

Many letters used to actually be pronounced. In Old English and Middle English, the k in know and knight was pronounced, and so was the l in walk. The initial consonant cluster kn dropped away gradually around the seventeenth century, and the spelling stayed behind. The cluster gh once represented a velar fricative, close to the ch sound in German. Later that sound either disappeared entirely or shifted into /f/, and that's exactly why the gh group has two different fates.

Loanwords kept their original spelling. After 1066, English borrowed huge numbers of words from Norman French and Latin, and later kept borrowing from Greek in academic fields. The p in psychology, the ch in Christmas, the t in ballet all arrived this way. English speakers pronounced them using their own sound system but copied the spelling of the lending language as is.

Some letters were deliberately inserted. This is the most interesting part. During the Renaissance, scholars wanted English spelling to look more like its Latin roots, so they stuffed letters into words that originally didn't have them. The word debt entered English through French as dette, with no b at all, and the b was added to make it look like debitum in Latin. Doubt is the same story — it came from doute, and the b was added to match dubitare. Receipt had a p added to match receptus. None of the three words ever pronounced the consonant that was added.

The printing press locked spelling in place right as pronunciation was shifting hard. Printing arrived in England in the late fifteenth century and began standardizing spelling. Around the same time, the English vowel system went through a major upheaval that linguists call the Great Vowel Shift. The result: spelling stopped at one point in time, while pronunciation kept moving for several hundred more years.

The case of island deserves special mention because it's a mistake. Old English spelled this word with no s. By the Renaissance, people mistakenly thought it was related to isle, a word borrowed from French and traced back to insula in Latin, so they inserted an s to match. The two words are actually not related at all. The s in island is a trace left by an unnecessary "correction," and English learners worldwide still have to remember it to this day. The word aisle picked up its s by the same logic.

Words with two equally correct pronunciations

A few words are still mid-change, so both pronunciations are recorded in dictionaries. Either choice is fine, but it helps to know both so you're not thrown off when someone else says it differently than you.

Silent letters and listening — where it actually hurts

This is where most articles on silent letters would stop, treating the job as done once you can pronounce things correctly. But for Vietnamese learners training their listening, the hard part hasn't even started.

Here's the problem. In your head, every English word is stored by its written shape, because you learned it through books and through your eyes. When you listen, your ear picks up a string of sounds and then goes hunting for the matching written shape in your storage. For any word with a silent letter, these two shapes don't line up, and that mismatch slows the search down or makes it fail outright.

A more concrete consequence: silent letters create a whole set of words that sound exactly alike but are spelled differently, and you can only tell them apart from context, not by ear.

The pair island and aisle is the priciest example in the table. Both carry an unpronounced s, both had that letter added because of a misunderstanding several hundred years ago, and both trip learners up in exactly the same way. When you hear /aɪl/ in the middle of a fast sentence, there's no way to know whether it's aisle, isle, or I'll except by leaning on the rest of the sentence.

The fix isn't memorizing more tables — it's linking the written form to the real sound through an activity that forces you to write down what you hear. That's dictation practice: listen to a sentence, write down exactly what your ear catches, then check it against the original. If you write "night" while the sentence actually said "knight," the mismatch shows up immediately and you'll remember it longer than from any table. At WELE, dictation is auto-graded word by word against a library of more than 800 podcasts with transcripts, and the words you get wrong get fed into a spaced-repetition review schedule, so the silent-letter words you keep slipping on come back around more often than the ones you've already nailed. It's free to start, and the listening level test takes just a few minutes if you want to know where you stand first.

Silent letters are just one of many reasons why spelling and the actual stream of sound don't line up. A bigger reason is that words run together in fast speech, and connected speech in English explains that mechanism. Read the two articles side by side and you get the full picture.

Quick answers

How many silent letters are there in English?

Almost any letter can end up silent in some word or other, so an exact count doesn't mean much. What's worth remembering is the roughly fifteen groups in the overview table at the top of the page, since they cover most of the words you run into every day.

If I pronounce the t in often, is that considered wrong?

No. Both pronunciations are in the dictionary. Dropping the t is more common, while pronouncing the t is making a comeback as more people read it off the spelling. Just pick one and stay consistent.

Should I learn silent letters by rule or by memorizing each word?

Learn by group first, since the groups like k before n, w before r, b after m have almost no exceptions and cover a huge number of words. Then pick off the odd individual words like Wednesday, salmon, colonel separately. Starting out by memorizing a scattered list is the slowest way to do it.

I know which letter is silent, so why can't I still hear it right?

Because knowing and recognizing in real time are two different things. You know the k in know isn't pronounced, but when /nəʊ/ goes by in a fast sentence, your brain still needs a moment to decide whether that was know or no. That time only shrinks the more times you encounter the word as actual sound, and three reasons Vietnamese learners struggle with listening goes into this in more depth.

Do native-speaking children have to learn silent letters too?

Yes, and they learn it in the opposite direction from you. They know how to say a word before they learn how to spell it, so for them a silent letter is a spelling problem. You know how to spell the word first, so for you a silent letter is a pronunciation and listening problem. Same phenomenon, two different kinds of difficulty.

The most sensible way to use this page is to reopen it whenever you run into a word that sounds strange next to its spelling, rather than sitting down to memorize all fifteen tables in one sitting. If you're mapping out your own learning path, the self-study English article places this spelling-and-pronunciation piece in its proper spot within the bigger journey.