Answer:

genius

Answer	Crossword Clue
GENIUS	Brilliance
GENIUS	Einstein
GENIUS	Brilliant person

GENIUS	Brain
GENIUS	Brainiac
GENIUS	Mensa prospect
GENIUS	It may be sheer
GENIUS	Mensa material
GENIUS	Unusual mental power.
GENIUS	Mental endowment.
GENIUS	Unusual power of invention.

GENIUS	Einstein, e.g.
GENIUS	"When ... is punished, its fame is exalted": Tacitus
GENIUS	"Brilliant!"
GENIUS	Einstein-type
GENIUS	Talent
GENIUS	Extraordinary intellect
GENIUS	Mensa candidate
GENIUS	Wise man