WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / S / sinisterness sinisterness 12 letters Scrabble 12 WWF 14 Definitions Look “sinisterness” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →