13 letters · 19 points in Scrabble
adjective not suitable for a particular occasion etc
adjective not in keeping with what is correct or proper
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English in- English appropriate English inappropriate From in- + appropriate.
Etymology from Wiktionary, CC BY-SA 3.0