ecstasy

Concise Oxford English Dictionary © 2008 Oxford University Press:
ecstasy /ˈɛkstəsi/

▶noun (pl. ecstasies)

• 1 an overwhelming feeling of great happiness or joyful excitement.

• 2 an emotional or religious frenzy or trance-like state.

• 3 (Ecstasy) an illegal amphetamine-based synthetic drug with euphoric effects.

– origin ME: from OFr. extasie, via late L. from Gk ekstasis ‘standing outside oneself’.