WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / S / substantiative substantiative adjective 14 letters Scrabble 19 WWF 23 Definitions adjective serving to support or corroborate collateralconfirmativeconfirmatoryconfirmingcorroborativecorroboratorysubstantiatingvalidating Look “substantiative” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →