11 letters · 17 points in Scrabble
adjective having a quality that provokes disbelief
adjective highly imaginative but unlikely
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English im- English plausible English implausible From im- + plausible.
Etymology from Wiktionary, CC BY-SA 3.0