9 letters · 19 points in Scrabble
verb bend or turn backward
verb articulate (a consonant) with the tongue curled back against the palate
adjective bent or curved backward
originFrom Latin rētrōflexus, the perfect participle of rētrōflectō (“bend, turn”), from flectō (“bend, turn”).
Etymology from Wiktionary, CC BY-SA 3.0