Silent k

A silent ⟨k⟩ occurs when the letter ⟨k⟩ appears in a word but does not actually reflect the pronunciation of a voiceless velar plosive (/k/), or any sound for that matter. A silent ⟨k⟩ is quite common in the English language, most often preceding an ⟨n⟩ at the beginning of a word. There are rare exceptions to this rule; one example is Knoebels Grove located in Pennsylvania.

While not as common, the letter ⟨g⟩ will also become silent when placed in front of an ⟨n⟩ at the beginning of a word, rather than being realized as a voiced velar plosive (/g/). An exception is the acronym GNU.

Etymology

In Old English, ⟨k⟩ and ⟨g⟩ were not silent in these words. Cognates in other Germanic languages show that the ⟨k⟩ was probably a voiceless velar plosive in Proto-Germanic (compare German Knecht to knight, Knoten to knot, etc. where the initial ⟨k⟩ is not silent); likewise, ⟨g⟩ was probably a voiced velar plosive (compare German Gnom to gnome, Gneis to gneiss, etc. where the initial ⟨g⟩ is not silent).

Words

Following is a list of words that include a silent ⟨k). For verbs, only the infinitive form of the verb is given, not any conjugations:

Nouns knack knackwurst knag knapsack knar knaur knave knawel knee knapweed knick-knack knickers knife knight knismesis knob knop knotweed knout knock knoll knot knowledge knuckle knur Knobhead knurl Belknap

Verbs knead knock knee knell knit know knuckleball knut

Others knuepple knacker

⟨gn⟩ gnar gnarl gnarr gnash gnat gnathic gnathite gnaw gneiss gnome gnomon gnosis gnostic gnotobiotics gnu

This list is incomplete; you can help by expanding it.

See also

• Silent letter
• Silent e