stressed Antonyms

unstressed as cool as a cucumber imperturbable happy-go-lucky carefree laid-back unaccented at peace unagitated undisturbed unruffled at ease even-tempered unperturbed unflustered unemotional unbothered unexcitable self-controlled unflappable untroubled unfazed unmoved tranquil equable dispassionate cool-headed cool controlled composed collected chilled calm impassive peaceful phlegmatic together stolid steady serene self-possessed sedate relaxed poised placid atonic