See relaxed in Webster's New World Roget's A-Z Thesaurus II
adjective
Not tautly bound, held, or fastened:
lax, loose, slack. See tightenUnconstrained by rigid standards or ceremony:
casual, easy, easygoing, informal, natural, spontaneous, unceremonious, unrestrained. (Informal) laid-back. See plain, tighten
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