11 letters · 15 points in Scrabble
adjective lacking protection or support
adjective having no protecting or concealing cover; - Shakespeare
adjective lacking weapons for self-defense
originEtymology tree English defense Proto-Indo-European *lewh₁- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English defenseless From defense + -less.
Etymology from Wiktionary, CC BY-SA 3.0