Ecstatic

wiktionary

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Borrowed from Ancient Greek ἐκστατικός(ekstatikós). Surface analysis: ecstasy +‎ -atic.

etymonline

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ecstatic (adj.)

1590s, "mystically absorbed," from Greek ekstatikos "unstable, inclined to depart from," from ekstasis (see ecstasy). Meaning "characterized by or subject to intense emotions" is from 1660s, now usually pleasurable ones, but not originally always so. Related: Ecstatical; ecstatically.