Synonyms of 'apprehensive'

afraid, alive, anxious, awake, aware, cognizant, concerned, conscious, disturbed, edgy, excitable, fearful, foreboding, frightened, high-strung, insightful, intelligent, irritable, knowing, knowledgeable, mindful, misgiving, nervous, nervy, omniscient, overanxious, overstrung, perceptive, percipient, perspicacious, prehensile, qualmish, sagacious, sensible, sentient, shrewd, solicitous, strained, taut, tense, troubled, understanding, uneasy, ware, wise, witting, zealous