Silence

A moment of silence (or an x minute silence) is a period of silent contemplation, prayer, reflection, or meditation.

4′33″ (pronounced "Four minutes, thirty-three seconds" or just "Four thirty-three") is a three-movement composition by American experimental composer John Cage (1912–1992).

Sensory deprivation (Sendep) or perceptual isolation is the deliberate reduction or removal of stimuli from one or more of the senses.

Omertà /oʊˈmɛərtə/ (Italian pronunciation: [omerˈta]) is a code of honor that places importance on silence, non-cooperation with authorities, and non-interference in the illegal actions of others.

Secundus the Silent (2nd century AD) was a Cynic or Neopythagorean philosopher who lived in Athens in the early 2nd century, who had taken a vow of silence.

To make an argument from silence (Latin: argumentum ex silentio) is to express a conclusion that is based on the absence of statements in historical documents, rather than on presence.

Selective mutism (SM) is an anxiety disorder in which a person who is normally capable of speech does not speak in specific situations or to specific people.

John Francis (born 1946) is an American environmentalist nicknamed the planetwalker.

Sleepify was an album by the funk band Vulfpeck.

In an alphabetic writing system, a silent letter is a letter that, in a particular word, does not correspond to any sound in the word's pronunciation.

A code of silence is a condition in effect when a person opts to withhold what is believed to be vital or important information voluntarily or involuntarily.