Collocations for genius - noun

great, pure, real, sheer, true
natural
wayward (esp. BrE)

flash, spark, stroke, touch
In a flash of pure genius, she realized the answer to the problem.
It was a stroke of genius on my part to avoid such awkward questions.

have
She has a genius for sorting things out.

show
a work which shows real genius

lie in sth
His genius lies in his ability to convey pure terror in his work.

of genius
a writer of genius

genius for
his genius for pinpointing the absurd

great
natural
eccentric, mad
creative
boy
evil
artistic, comedic (esp. AmE), comedy, comic, computer, literary, math (AmE), mathematical, maths (BrE), military, musical, scientific, etc.