WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / I / investigation investigation noun 13 letters Scrabble 17 WWF 21 Definitions noun the work of inquiring into something thoroughly and systematically investigating noun an inquiry into unfamiliar or questionable activities probe Look “investigation” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →