WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / S / sister-in-law sister-in-law noun 2 syllables 13 letters Scrabble 14 WWF 16 Definitions noun the sister of your spouse Look “sister-in-law” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →