The Collaborative International Dictionary of English v.0.48:
euphoric \euphoric\ adj. strongly experiencing a feeling of well-being; feeling euphoria. Opposite of dysphoric. [Narrower terms: expansive] Syn: elated, happy. [WordNet 1.5]WordNet (r) 3.0 (2006):
euphoric adj 1: exaggerated feeling of well-being or elation [ant: distressed, dysphoric, unhappy]