gang up on (one)(redirected from gang up on him)
gang up on (one)
To band together and confront one as a group or collective effort, typically for some end. The kids ganged up on me and convinced me to get pizza for dinner. A bunch of the bigger kids ganged up on me after school and stole my money.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.