Akademik

peacefulness
noun
1. the absence of mental stress or anxiety
Syn: ↑peace, ↑peace of mind, ↑repose, ↑serenity, ↑heartsease, ↑ataraxis
Derivationally related forms: ↑pacify (for: ↑peace)
Hypernyms: ↑tranquillity, ↑tranquility, ↑quietness, ↑quietude
2. a state that is calm and tranquil
Syn: ↑peaceableness
Derivationally related forms: ↑peaceful, ↑peaceable (for: ↑peaceableness)
Hypernyms: ↑amity
Hyponyms: ↑mollification

Useful english dictionary. 2012.