let up on (someone)

to make less of an effort to get someone to do something.

Teachers let up on us when we were seniors, probably figuring they'd taught us as much as we'd ever learn.

Usage notes: often used in the form not let up on someone:

The police said they would not let up on drug dealers.

• throw upon someone's mercy
• throw up something
• throw up your hands
• throw weight around
• throw your hat in the ring
• throw your money around
• throw yourself into
• throw yourself into something
• throw yourself on mercy
• throw yourself on someone's mercy
• throw yourself upon mercy
• throw yourself upon someone's mercy
• throw your weight around
• throw your weight behind
• throw your weight behind someone
• throw your weight behind something
• thumb nose at
• thumb nose at someone
• thumb nose at something
• thumbs down
• thumbs down someone
• thumbs down something
• thumbs up
• thumbs up someone
• thumbs up something