extravagancy (noun) extravagancy: excess
Sinonime: addlepate, blockhead, boob*, dimwit, dingbat, dolt, dope*, dork, dumbbell, dummy*, dunce, fool, halfwit, idiot, ignoramus, imbecile, lamebrain, loony,
loser*, mental defective, nerd*, simpleton
Antonime: brain