frantic Antonyms

as cool as a cucumber unworried carefree levelheaded easygoing laid-back unagitated undisturbed unshaken unshakable unruffled unmoved unconcerned tranquil coolheaded imperturbable at ease well-balanced unperturbed unflustered unengaged unemotional unbothered self-controlled unflappable untroubled unfazed unexcitable even-tempered cool as a cucumber together stolid impassive equable dispassionate cool-headed cool controlled confident composed collected chilled centered calm balanced nonchalant peaceful phlegmatic steady stagnant