WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / A / acid-fastness acid-fastness /æsɪdfæstnɪs/ 3 syllables 13 letters Scrabble 18 WWF 20 Definitions Look “acid-fastness” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →