Meaning

noun a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class

originEtymology tree French arriver Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Hellenic *-tās Ancient Greek -τής (-tḗs) Ancient Greek -ῐστής (-ĭstḗs)bor. Latin -istabor. French -iste French arrivistebor. English arriviste Borrowed from French arriviste.

Etymology from Wiktionary, CC BY-SA 3.0