9 letters · 17 points in Scrabble
noun a child of your spouse by a former marriage
originFrom Middle English stepchild, stepchyld, from Old English stēopċild (“stepchild”), equivalent to step- + child. Compare Dutch stiefkind (“stepchild”), German Stiefkind (“stepchild”), Swedish styvbarn (“stepchild”).
Etymology from Wiktionary, CC BY-SA 3.0