15 letters · 21 points in Scrabble
adjective impossible or difficult to pronounce correctly
adjective very difficult to pronounce correctly
originEtymology tree English un- English pronounce Proto-Indo-European *-tḗr Proto-Indo-European *-dʰlom Proto-Indo-European *-dʰlis Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English -able English pronounceable English unpronounceable From un- + pronounceable.
Etymology from Wiktionary, CC BY-SA 3.0