An insane or eccentric person; a crackpot.
Eccentric behaviour; lunacy.
Flawed or damaged; unsound, liable to break apart; ramshackle.
Sickly, frail; diseased.
Of unsound mind; insane, demented.
His ideas were both frightening and crazy.
Out of control.
When she gets on the motorcycle she goes crazy.
Very excited or enthusiastic.
He went crazy when he won.
In love; experiencing romantic feelings.
Why is she so crazy about him?
Very unexpected; wildly surprising.
The game had a crazy ending.
Very, extremely.
That trick was crazy good.