11 letters · 20 points in Scrabble
adjective incapable of being conceived or considered
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- Proto-West Germanic *þankijan Old English þenċan Middle English thinken English think Proto-Indo-European *-dʰlom Proto-Indo-European *-dʰlis Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English…
Etymology from Wiktionary, CC BY-SA 3.0