euphoric (adj.)youdaoicibaDictYouDict[euphoric 词源字典]
"characterized by euphoria," 1885, originally with reference to cocaine, from euphoria + -ic. The noun meaning "a drug which causes euphoria" also is from 1885. Euphoriant is from 1946 as a noun, 1947 as an adjective.[euphoric etymology, euphoric origin, 英语词源]