perv (n,)youdaoicibaDictYouDict[perv 词源字典]
also perve, 1944, slang shortening of (sexual) pervert (n.). As a slang verb, by 1941 as "to act erotically" (intransitive), by 1959 as "to eroticize" something (transitive).[perv etymology, perv origin, 英语词源]