silent silent /ˈsaɪlənt/

adjective

1. () Marked by absence of sound  ( soundless , still , silent )
   marked by absence of sound
    A silent house
   a silent house
    Soundless footsteps on the grass
   soundless footsteps on the grass
    The night was still
   the night was still
   
2. () Failing to speak or communicate etc when expected to  ( mum , silent )
   failing to speak or communicate etc when expected to
    The witness remained silent
   the witness remained silent
   
3. Unable to speak because of hereditary deafness  ( dumb , mute , silent )
   unable to speak because of hereditary deafness
   
4. Having a frequency below or above the range of human audibility  ( silent )
   having a frequency below or above the range of human audibility
    A silent dog whistle
   a silent dog whistle
   
5. Not made to sound  ( silent , unsounded )
   not made to sound
    The silent h' at the beginning of honor'
   the silent h' at the beginning of honor'
    In French certain letters are often unsounded
   in French certain letters are often unsounded
   
6. Implied by or inferred from actions or statements  ( silent , tacit , understood )
   implied by or inferred from actions or statements
    Gave silent consent
   gave silent consent
    A tacit agreement
   a tacit agreement
    The understood provisos of a custody agreement
   the understood provisos of a custody agreement