WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / A / authentication authentication noun 5 syllables 14 letters Scrabble 19 WWF 22 Definitions noun a mark on an article of trade to indicate its origin and authenticity assay-markhallmark noun validating the authenticity of something or someone certification Look “authentication” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →