Which of the following words has a silent consonant in it?

Concept

A silent consonant is written in a word but is not heard as a separate consonant sound in its standard pronunciation.

Letter groups that jointly represent a vowel sound, and a final silent vowel, should be distinguished from a silent consonant.

Application

In “Calm,” the written l is not pronounced; the word is pronounced /kɑːm/ (or /kɑm/, depending on accent). Therefore, “Calm” contains the silent consonant l.

Contrast

• In “Fawn,” aw works together as a vowel spelling, while f and n are pronounced.

• In “Cure,” the unpronounced final e is a vowel, not a consonant.

• In “But,” b and t are pronounced, and u represents the vowel sound.

Hence, the word with a silent consonant is “Calm.”