7 letters · 9 points in Scrabble
adjective affording unobstructed entrance and exit; not shut or closed
adjective affording free passage or access
adjective with no protection or shield
originEtymology tree English open Proto-Indo-European *-yōs Proto-Indo-European *-tHós Proto-Indo-European *-istHos Proto-Germanic *-istaz Proto-West Germanic *-ist Old English -est Middle English -est English -est English openest From open + -est.
Etymology from Wiktionary, CC BY-SA 3.0