7 letters · 14 points in Scrabble
adjective lacking or not requiring a key
originEtymology tree Proto-West Germanic *kaiju Old English cǣġ Middle English keye English key 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 keyless From key + -less.
Etymology from Wiktionary, CC BY-SA 3.0