The Oxford Thesaurus An A-Z Dictionary of Synonyms - nervous adj.

1) highly-strung, excitable, sensitive, tense, agitated, wrought up, worked up, upset, flustered, ruffled, disturbed, perturbed, distressed, worried, anxious, troubled, concerned, disquieted, edgy, on edge, on tenterhooks, fidgety, fretful, uneasy, apprehensive, frightened, fearful, shaky, scared, skittish, US on a tightrope, Colloq jumpy, jittery, flappable, in a stew, in a dither, in a sweat, in a tizzy, in a flap, uptight, Brit nervy, US on pins and needles, Slang strung out: Thomas is nervous because he has to give a speech. 2) difficult, tense, critical: There were a few nervous moments before we knew if the rope would hold.