adj. 25B6; adjective (informal) NERVOUS, on edge, edgy, tense, anxious, nervy, ill at ease, uneasy, keyed up, overwrought, on tenterhooks, worried, apprehensive; informal with butterflies in one's stomach, like a cat on a hot tin roof, twitchy, jumpy, uptight, het up, in a tizz/tizzy; Brit. informal strung up, like a cat on hot bricks; N. Amer. informal spooky, squirrelly, antsy; Austral./NZ informal toey; dated overstrung.
calm.