Akademik

quietness
noun
1. the property of making no sound (Freq. 2)
Syn: ↑soundlessness
Derivationally related forms: ↑soundless (for: ↑soundlessness), ↑quiet
Hypernyms: ↑silence, ↑quiet
Hyponyms: ↑noiselessness
2. a state of peace and quiet (Freq. 1)
Syn: ↑tranquillity, ↑tranquility, ↑quietude
Derivationally related forms: ↑quiet, ↑tranquil (for: ↑tranquility), ↑tranquil (for: ↑tranquillity)
Hypernyms: ↑calmness
Hyponyms:
peace, ↑peacefulness, ↑peace of mind, ↑repose, ↑serenity, ↑heartsease, ↑ataraxis, ↑easiness, ↑relaxation

Useful english dictionary. 2012.