Akademik

peace of mind
noun
the absence of mental stress or anxiety (Freq. 1)
Syn: ↑peace, ↑peacefulness, ↑repose, ↑serenity, ↑heartsease, ↑ataraxis
Derivationally related forms: ↑pacify (for: ↑peace)
Hypernyms: ↑tranquillity, ↑tranquility, ↑quietness, ↑quietude

Useful english dictionary. 2012.