Synonyms of relaxed

1 Syllable
limp, mild, calm, slack
2 Syllables
restful, laid-back, easy, patient, lazy, tranquil, placid, neutral, limper, looser, lenient, floppy, breezy, slaked, low-key, soft-sell, floppier, casual, homey, loosest, poised, slaking, slake, rested, offhand
3 Syllables
spontaneous, tolerant, serene, unlatched, unfaded, informal, unhurried, carefree, unfussy, licentious, insouciant, unbolted, complaisant, relieved, nonchalant, indulgent, untired, bystanding, composed, liberal, unshackled, unhooked, unpinned, uncaged, lickerish, unmoral, hang-loose, outgiving, flexible, easygoing, collected, amoral, natural, undimmed, indolent, throwaway
4 Syllables
peaches-and-cream, unwithered, low-pressure, undemanding, devil-may-care, free-and-easy, unrestrained, unconcerned, unselfconscious, moderate, non-combatant, unfatigued, uninvolved, middle-of-road, comfortable, unbothered, uncritical, amenable, unsecured, noncombatant, unself-conscious, unhampered, unrepressed, leisurely, unflappable, self-possessed, unrestricted, oversexed, unconfined, nonaligned, loose-fitting
5 Syllables
unceremonious, even-tempered, happy-go-lucky, conversational, nonbelligerent, uninhibited
6 Syllables
confabulatory, nonparticipating