12 letters · 23 points in Scrabble
verb mate a hybrid of the first generation with one of its parents
originEtymology tree Proto-Indo-European *bʰeg-der.? Proto-Germanic *baką Proto-West Germanic *bak Old English bæc Middle English bak English back English crossing English backcrossing From back + crossing.
Etymology from Wiktionary, CC BY-SA 3.0