Silent Letters in English: Every Family, with Audio

Where the silent letters came from

Three separate accidents of history produced almost all of them. The first was the Norman Conquest, which poured French vocabulary into English along with French spelling conventions that did not fit — the silent “h” of hour and honest arrived this way. The second was the printing press: from the 1470s onward, spellings began to freeze, and many were frozen by printers who were Dutch-trained and working from manuscripts already a century out of date.

The third and largest was the Great Vowel Shift, a sweeping change in English pronunciation running roughly from 1400 to 1700, during which every long vowel in the language moved and several consonants were dropped altogether. The “k” in knee, the “w” in write and the “gh” in night were all pronounced before it and silent after. The spelling was already fixed by then, so it recorded the older pronunciation permanently.

This is why the silent letters cluster so neatly: they are not scattered exceptions but the residue of a small number of specific sound changes, each of which affected every word in a given position at once. That is exactly what makes them learnable as families.

Silent B — after M, and before T

A “b” goes quiet in two places: at the end of a word after “m”, and in front of a “t”. Both are fossils — the b was pronounced in Middle English and stopped being said long before anyone stopped writing it.

Silent K — before N

Every English word beginning “kn-” was once pronounced with the k audible. It fell out of speech in the seventeenth century, and the spelling never caught up.

Silent W — before R

The same story as silent K, one letter over: “wr-” at the start of a word is now simply /r/.

Silent L — before K, M and F

An “l” before k, m or f usually disappears and lengthens the vowel in front of it instead. “Walk” is /wɔːk/, not /wɔːlk/.

Silent GH — after a vowel

This is the largest silent family in English, and the most reliable: after a vowel, “gh” is either silent or pronounced /f/. It once represented a throaty consonant that Middle English lost entirely.

Silent H — at the start, and after W

A handful of words borrowed from French keep a written h that is never sounded, and “wh-” in most British accents is simply /w/.

Silent T — between S and a weak vowel

In -sten and -stle, the t is squeezed out between two other consonants. It has no exceptions worth learning: if you can see “stle” or “sten”, the t is gone.

Silent G — before N

Where “gn” sits at the start or end of a syllable, the g is silent. Note that it comes back when a suffix splits the pair — compare “sign” with “signature”.

Silent P — before S and N in Greek words

Words English took from Greek keep a written p that English speakers never say. Every one of them is academic vocabulary, which is where you will meet them.

Silent N — after M

A small family, all Latin, where a final “mn” loses the n. As with silent G, the n returns under suffixation: “column”, but “columnist”.

Silent C — after S

In “sc-” before e or i, the c is absorbed into the s. What you hear is a plain /s/.

Silent U — after G

A “u” after g is often only there to keep the g hard before e or i. It does no work of its own and is not pronounced.

Silent letters are not always doing nothing

It is tempting to treat a silent letter as pure noise, but several of them carry real information. The silent “e” at the end of a word — not listed above, because it is a spelling convention rather than a lost consonant — is what separates hat from hate and bit from bite: it does not make a sound of its own, it changes the vowel in front of it. The silent “l” of walk and calm lengthens the preceding vowel in the same way, and the silent “gh” of light and high reliably signals the /aɪ/ diphthong.

This matters when you meet an unfamiliar word in reading. A word spelt with “-igh-” is a safe bet for /aɪ/; a word beginning “kn-” or “wr-” is a safe bet for a single consonant. The spelling is a poor guide to English pronunciation overall, but within these families it is a very good one.

When the letter comes back

Silent letters are silent in a position, not in a word, and adding a suffix can move the letter out of that position and restore it. Sign has a silent g; signature does not. Column has a silent n; columnist does not. Bomb has a silent b; bombard does not.

The practical rule is to check the syllable boundary rather than assume the family holds. If the suffix pulls the silent letter into the start of a new syllable, where English is perfectly happy to pronounce it, it comes back. This is also a useful clue in the other direction: a word that looks as though it should have a silent letter but sounds it out is usually a word with a suffix hiding in it.

Questions about silent letters