9 letters · 17 points in Scrabble
adjective having a mental age of three to seven years
originEtymology tree English imbecile Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English imbecilic From imbecile + -ic.
Etymology from Wiktionary, CC BY-SA 3.0