Home › Words › T › temperamentalisttemperamentalisttemperamentalist · noun — A temperamental person.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, temperamentalist ranks #32,639 of 43,295 for Qualifying.EtymologyFrom temperamental + -ist.nounA temperamental person.Definitions & examples from Wiktionary (CC BY-SA 3.0).