9 letters · 12 points in Scrabble
verb arouse unreasoning love or passion in and cause to behave in an irrational way
originFirst attested in 1477, in Middle English; inherited from Middle English infatuate (“foolish”, adjective), from Latin infatuātus, perfect passive participle of infatuō, see -ate (adjective-forming suffix) and -ate (noun-forming suffix).
Etymology from Wiktionary, CC BY-SA 3.0