WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / P / prn prn adverb 3 letters Scrabble 5 WWF 7 Definitions adverb according to need (physicians use PRN in writing prescriptions) as neededas requiredpro re nata Look “prn” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →