Read the dictionary definition of silent. All definitions for this word.
1. unable to speak because of hereditary deafness
2. having a frequency below or above the range of human audibility
1. a silent dog whistle
3. not made to sound
1. the silent `h' at the beginning of `honor'
2. in French certain letters are often unsounded
4. failing to speak or communicate etc when expected to
1. the witness remained silent
5. implied by or inferred from actions or statements
1. gave silent consent
2. a tacit agreement
3. the understood provisos of a custody agreement
6. marked by absence of sound
1. a silent house
2. soundless footsteps on the grass
3. the night was still
