making no noise or sound, esp. no disturbing sound

quiet neighbors.

free, or comparatively free, from noise

a quiet street.

silent

Be quiet!

restrained in speech, manner, etc.; saying little

a quiet person.

free from disturbance or tumult; tranquil; peaceful

a quiet life.

being at rest.

refraining or free from activity, esp. busy or vigorous activity

a quiet Sunday afternoon.

making no disturbance or trouble; not turbulent; peaceable

The factions remained quiet for twenty years.

motionless or moving very gently

quiet waters.

free from disturbing thoughts, emotions, etc.; mentally peaceful

a quiet conscience.

said, expressed, done, etc., in a restrained or unobtrusive way

a quiet reproach; a quiet admonition.

not showy or obtrusive; subdued

quiet colors.

not busy or active

The stock market was quiet last week.

to make quiet.

to make tranquil or peaceful; pacify

to quiet a crying baby.

to calm mentally, as a person.

to allay (tumult, doubt, fear, etc.).

to silence.

to become quiet (often fol. by down ).

noun

hush , noiselessness , quiet , soundlessness , still , stillness , calm , calmness , lull , peace , peacefulness , placidity , placidness , serenity , tranquillity , untroubledness