1. strange, odd, or not working properly
Usage: informal
2. mentally unstable or eccentric
Usage: informal; sometimes offensive

Examples

• The computer has been acting screwy all morning.
• That’s a screwy way to solve the problem.
• The weather has been really screwy lately.
• His screwy ideas never make any sense.
• The machine makes screwy noises when it runs.
• She gave me some screwy directions to the store.