12 letters · 19 points in Scrabble
noun a daughter of your spouse by a former marriage
originFrom Middle English stepdoughter, stepdoghter, steopdohter, from Old English stēopdohtor (“stepdaughter”), from Proto-Germanic *steupaduhtēr (“stepdaughter”), equivalent to step- + daughter. Cognate with Saterland Frisian Stäifdochter (“stepdaughter”), West Frisian styfdochter (“stepdaughter”), Dutch stiefdochter (“stepdaughter”), German Low German Steevdochter (“stepdaughter”), German…
Etymology from Wiktionary, CC BY-SA 3.0