11 letters · 15 points in Scrabble
verb investigate scientifically
verb conduct an inquiry or investigation of
originRecorded since circa 1510, a back-formation from investigation on the basis of -ate (verb-forming suffix), from Latin investīgātiō (“a searching into”), from investīgātus, the perfect passive participle of investīgō, equivalent to in- + vestigate. Displaced native Old English undersēċan (literally “to search under or between”).
Etymology from Wiktionary, CC BY-SA 3.0