WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / K / knuckle down knuckle down verb /nəkəldaʊn/ 2 syllables 12 letters Scrabble 25 WWF 30 Definitions verb work very hard, like a slave break one's backbuckle downslave Look “knuckle down” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →