screw up (someone)

to confuse or hurt someone.

She really screwed him up when she left him.

Their parents' divorce really screwed up the kids.

• learn something off pat
• learn something the hard way
• learn the hard way
• learn the ropes
• learn your lesson
• least can do
• least of all
• Least said, soonest mended.
• least you can do
• leave a bad taste in mouth
• leave a bad taste in your mouth
• leave alone
• leave a lot to be desired
• leave cold
• leave hanging
• leave high and dry
• leave holding the bag
• leave in hands
• leave in peace
• leave in someone's hands
• leave in the cold
• leave in the dark
• leave in the dust
• leave in the lurch
• leave it at that