What are silent letters?

A silent letter appears in the spelling of a word but makes no sound when spoken. English has many because it borrows words from Latin, French, Greek, and Germanic languages — each with different pronunciation rules.

Each card below shows a silent letter group.

Silent K

knee, knife, know

K is silent before N at the start of a word

Silent W

write, wrap, wrong

W is silent before R at the start of a word

Silent B

lamb, thumb, debt

B is often silent after M or before T

Silent G

gnome, sign, gnat

G is silent before N or in -ign and -eign patterns

Silent H

hour, honest, heir

H is silent in many French-origin words

Silent L

calm, walk, half

L is silent before M, F, K, and V

Silent P

psychology, psalm

P is silent before S at the start — Greek origin

Silent GH

night, thought, high

GH is silent after a vowel in many words

Tap any word chip to hear it. Tap Listen to rule to hear the full explanation. The red dotted letter is silent.

Silent KK is silent before N

From Old English — the K was once actually pronounced.

knee
knife
knit
know
knob
knock
knight
knuckle
Silent WW is silent before R at the start

Also silent in "two," "answer," and "sword."

write
wrap
wrong
wrist
wreck
two
answer
sword
Silent BB is silent after M or before T

Words ending in -mb or -bt usually have a silent B.

lamb
thumb
bomb
climb
comb
debt
doubt
numb
Silent GG is silent before N or in -ign/-eign

Common in words borrowed from French and Latin.

gnome
gnat
sign
design
foreign
align
campaign
reign
Silent HH is silent in French-borrowed words

Also silent after consonants like R, G, and W.

hour
honest
heir
honour
ghost
rhyme
vehicle
exhaust
Silent LL is often silent before M, F, K, and V

Common in Old French and Latin-origin words.

calm
walk
half
talk
salmon
could
should
would
Silent PP is silent when PS or PT starts a word

Greek-origin words. Also silent in some other borrowings.

psychology
psalm
psychiatry
pterodactyl
receipt
cupboard
raspberry
corps
Silent GHGH is silent after a vowel

Once pronounced like the German "ch" — now completely silent.

night
light
high
thought
though
through
neighbour
sigh

Tap any word row to hear it pronounced aloud.

Silent K

  • knightK silent
  • kneeK silent
  • knifeK silent
  • knowK silent
  • knitK silent
  • knuckleK silent

Silent W

  • writeW silent
  • wristW silent
  • wrongW silent
  • wrapW silent
  • twoW silent
  • swordW silent

Silent B

  • lambB silent
  • thumbB silent
  • bombB silent
  • debtB silent
  • doubtB silent
  • combB silent

Silent G

  • gnomeG silent
  • signG silent
  • foreignG silent
  • designG silent
  • campaignG silent
  • alignG silent

Silent H

  • hourH silent
  • honestH silent
  • heirH silent
  • ghostH silent
  • rhymeH silent
  • vehicleH silent

Silent L

  • calmL silent
  • walkL silent
  • halfL silent
  • salmonL silent
  • couldL silent
  • wouldL silent

Silent P

  • psychologyP silent
  • psalmP silent
  • receiptP silent
  • cupboardP silent
  • raspberryP silent
  • corpsP silent

Silent GH

  • nightGH silent
  • lightGH silent
  • thoughtGH silent
  • throughGH silent
  • neighbourGH silent
  • sighGH silent
Score: 0 / 0

Which letter is silent in this word?

KNIFE