brilliance Antonyms

inexpensiveness infantilism arrested development recklessness zanyism vagueness vacuousness vacuity vacancy unwisdom mental retardation denseness fatuousness bleakness moronity amateurishness ordinariness dementedness fruitlessness schizophrenia colorlessness ridiculousness unintelligence umbra turbidness slowness simpleness silveriness silliness shadowiness shadowing shadow shadiness shade sobriety spareness squalor turbidity thickness tenebrosity tawdriness swarthiness subservience stupidity stigmata starkness setdown learning problems sottishness slow-wittedness