WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / T / thumb rule thumb rule /θəmrul/ 10 letters Scrabble 16 WWF 20 Definitions Look “thumb rule” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →