If something is silent, it is completely quiet. After your noisy houseguests leave, you'll probably enjoy being all alone in your silent house.

Sometimes a silent reading period in a third grade class truly is silent — and other times, the sound of soft giggling can be heard. People are silent when they don't speak, and a silent film has no soundtrack. You might exchange a silent message with your best friend without using words, just by raising your eyebrows or shrugging your shoulders. The Latin root of silent is silere, "be quiet or still."

Definitions of silent

adj marked by absence of sound

“a silent house”
soundless, still
free of noise or uproar; or making little if any sound

adj failing to speak or communicate etc when expected to

“the witness remained silent
incommunicative, uncommunicative
not inclined to talk or give information or express opinions

adj unable to speak because of hereditary deafness

dumb, mute
inarticulate, unarticulate
without or deprived of the use of speech or words

adj implied by or inferred from actions or statements

“gave silent consent”
tacit, understood
implicit, inexplicit
implied though not directly expressed; inherent in the nature of something

adj not made to sound

“the silent `h' at the beginning of `honor'”
inaudible, unhearable
impossible to hear; imperceptible by the ear

adj having a frequency below or above the range of human audibility

“a silent dog whistle”
inaudible, unhearable
impossible to hear; imperceptible by the ear

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