Silent letters
Why do we write "knife", "thumb", "knight", and "psychology" — with letters we never even pronounce?
Silent letters are letters that appear in spelling but are not pronounced. They are very common in English and often reflect older pronunciations or the word’s origin.
Learning common silent-letter patterns helps you recognise and spell many difficult words.
Why silent letters exist
English spelling has changed more slowly than pronunciation. Over time, some sounds disappeared, but the letters stayed.
Silent letters can also show a word’s history or help distinguish similar words.
Silent E (magic E)
The most important silent letter is final E.
It often makes the vowel before it long:
cap → cape, kit → kite, hop → hope
Sometimes it is just part of the spelling:
have, give, come, love
Silent B
Often appears after M at the end of words:
lamb, comb, thumb, bomb
Also before T:
debt, doubt
Silent K and G
Silent K before N at the start:
know, knee, knife, knight
Silent G before N:
sign, design, foreign
These are reliable patterns.
Silent H
In some words from French:
honest, hour, honour
In modern English, wh often sounds like w:
what, where, when
Silent L
Often before certain consonants:
walk, talk, calm, half, could
The L is written but not pronounced.
Silent P, T, and W
Silent P (often Greek origin):
psychology, pneumonia
Silent T:
listen, castle, often
Silent W before R:
write, wrong, wrist
Silent GH
GH can be silent or change sound:
Silent:
night, light, though
Sounds like F:
rough, cough, enough
This is one of the most irregular patterns in English.
Silent U
After G, the U keeps the G “hard”:
guess, guide, guitar
Without the U, G would sound like J.
How to approach silent letters
• Look for common patterns (kn-, wr-, -mb)
• Connect spelling with word origin
• Memorise common word groups
Do not try to guess randomly — use patterns.
Key idea
Silent letters are not mistakes — they are part of the history and structure of English.
Recognising patterns makes them predictable and easier to learn.
