Oxford Dictionary English stepfamily noun noun BrE BrE//ˈstepfæməli// ; NAmE NAmE//ˈstepfæməli// (pl. stepfamilies) Relations, Family background Add to my wordlistjump to other resultsthe family that is formed when somebody marries a person who already has children Wordfinderfamilyadopt, child, family, generation, heir, in-laws, parent, relation, stepfamily, surrogate mother See related entries: Relations, Family backgroundSee stepfamily in the Oxford Advanced American DictionaryCheck pronunciation: stepfamily oxfordlearnersdictionaries.com