Definition of "Silent" :

adjective: unable to speak because of hereditary deafness

adjective: having a frequency below or above the range of human audibility

"A silent dog whistle."

adjective: not made to sound

"The silent h' at the beginning of honor'."

adjective: failing to speak or communicate etc when expected to

"The witness remained silent."

adjective: implied by or inferred from actions or statements

"Gave silent consent."

adjective: marked by absence of sound

"A silent house."