WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / U / unsubstantial unsubstantial adjective /ənsəbstænʃəl/ 4 syllables 13 letters Scrabble 15 WWF 21 Definitions adjective lacking material form or substance; unreal insubstantialunreal Look “unsubstantial” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →