SYNONYMS
worried, concerned, apprehensive, fearful, uneasy, ill at ease, perturbed, troubled, disquieted, bothered, disturbed, distressed, fretful, fretting, agitated, in a state of agitation, nervous, in a state of nerves, edgy, on edge, tense, overwrought, worked up, keyed up, strung out, jumpy, afraid, worried sick, with one's stomach in knots, with one's heart in one's mouth, on pins and needles, stressed, under stress, in suspense, flurried
informal uptight, a bundle of nerves, on tenterhooks, with butterflies in one's stomach, like a cat on a hot tin roof, jittery, twitchy, in a state, in a stew, all of a dither, in a flap, in a sweat, in a tizz, in a tizzy, all of a lather, het up, in a twitter
British informal strung up, windy, having kittens, in a spin, in a flat spin, stressy, like a cat on hot bricks
North American informal antsy, spooky, spooked, squirrelly, in a twit
Australian, New Zealand informal toey
dated overstrung, unquiet