raptEnglishOxford American Thesaurusrapt adjective 1 the rapt teenage audience: fascinated, enthralled, spellbound, captivated, riveted, gripped, mesmerized, enchanted, entranced, charmed, bewitched, transported, enraptured; thrilled, ecstatic, rapturous; informal blissed out. ▷antonyms uninterested, inattentive. 2 she stood motionless for a second, as if rapt in thought: engrossed, absorbed, lost, preoccupied, in a brown study, intent.