unflappable Antonyms

neurologic trembling touchy tense strained skittish shaky shaking scared ruffled restless restive rattled quaking uneasy unquiet upset spooky fazed antsy uptight overstrung jumpy jittery ill at ease worked up stressed unsettled worried wired perturbed perturbable overwrought febrile excitable edgy disturbed disquieted disconcerted discomposed concerned bothered apprehensive anxious alarmed agitated fevered fidgety flurried nervy