WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / S / supplementation supplementation noun 15 letters Scrabble 21 WWF 28 Definitions noun a quantity added (e.g. to make up for a deficiency) supplement noun the act of supplementing subjoiningsubjunction Look “supplementation” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →