(it) beats me

informal

something that you say when you cannot understand something.

It beats me how he managed to survive for three weeks alone in the mountains. (often + question word)

• on steroids
• on tap
• on target
• on tenterhooks
• on the agenda
• on the air
• on the attack
• on the average
• on the back burner
• on the ball
• on the bench
• on the blink
• on the block
• on the blocks
• on the boil
• on the books
• on the brink of
• on the brink of something
• on the bubble
• on the button
• on the case
• on the cheap
• on the contrary
• on the cutting edge
• on the cutting edge of