WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / P / perniciously perniciously adverb 4 syllables 12 letters Scrabble 19 WWF 23 Definitions adverb in a harmfully insidious manner insidiously adverb in a noxiously baneful way banefully Look “perniciously” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →