8 letters · 15 points in Scrabble
noun an attacker who waits in a concealed position to launch a surprise attack
originEtymology tree English ambush Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English ambusher From ambush + -er.
Etymology from Wiktionary, CC BY-SA 3.0