Akademik

tranquility
noun
1. a disposition free from stress or emotion (Freq. 1)
Syn: ↑repose, ↑quiet, ↑placidity, ↑serenity, ↑tranquillity
Derivationally related forms: ↑placid (for: ↑placidity), ↑quiet (for: ↑quiet)
Hypernyms: ↑composure, ↑calm, ↑calmness, ↑equanimity
Hyponyms: ↑ataraxia
2. an untroubled state; free from disturbances
Syn: ↑tranquillity, ↑quiet
Derivationally related forms: ↑tranquil (for: ↑tranquillity)
Hypernyms: ↑order
3. a state of peace and quiet
Syn: ↑tranquillity, ↑quietness, ↑quietude
Derivationally related forms: ↑quiet (for: ↑quietness), ↑tranquil, ↑tranquil (for: ↑tranquillity)
Hypernyms: ↑calmness
Hyponyms:
peace, ↑peacefulness, ↑peace of mind, ↑repose, ↑serenity, ↑heartsease, ↑ataraxis, ↑easiness, ↑relaxation

Useful english dictionary. 2012.