cool-headed Antonyms

all of a doodah in a lather in a flap hot under the collar het up beside oneself jumpy ill at ease worked up worried wild upset restless in a state keyed up in a cold sweat in a state of nerves having kittens all of a lather all of a dither in a tizz in a state of agitation twitchy panicky on tenterhooks on pins and needles on edge raving overwrought nervous brittle breathless berserk awe-struck apprehensive apoplectic anxious annoyed angry agog agitated aggravated bullying careworn mad irritated hysterical frenzied frantic fidgety