dig up (some) dirt (on (someone))

to look for and find unpleasant or embarrassing information about someone.

They tried to dig up some dirt on their political enemies.

Etymology: based on the slang meaning of dirt (= negative information about a person)

• at the top of your lungs
• at the top of your voice
• at the very least
• at this stage of the game
• at times
• attribute something to
• attribute something to someone
• attribute something to something
• attribute to
• attribute to someone
• attribute to something
• a turf war
• a turkey shoot
• a turn of phrase
• a turn of the knife
• a turn of the screw
• at variance with
• at variance with someone
• at variance with something
• a twist of the knife
• at wit's end
• at worst
• a two-way street
• at your best
• at your convenience