12 letters · 18 points in Scrabble
adjective (of theories etc) incapable of being defended or justified
adjective not able to be protected against attack
adjective incapable of being justified or explained
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English in- English defensible English indefensible From in- + defensible.
Etymology from Wiktionary, CC BY-SA 3.0