Synonyms and related words :
accepting, accommodating, acquiescent, adapting, adaptive, adjusting, amenable, at ease, comfortable, compliant, composed, content, contented, easy, easygoing, eupeptic, euphoric, happy, humble, meek, obedient, of good comfort, passive, pleased, resigned, sans souci, satisfied, submissive, uncomplaining, unrepining, unresisting, without care