"Ganged up" is a phrase that typically implies a negative or aggressive connotation, as it describes a group of people acting together to intimidate, attack, or dominate others. There are several synonyms that can be used to describe this type of behavior, including:
1. Mobbed
2. Swarm
3. Cornered
4. Converged
5. Conspired
6. Teamed up
7. United
8. Grouped
9. Collaboration
10. Band together
While some of these synonyms may imply a more positive intention than others, all of them suggest a collective effort by multiple individuals to assert dominance or control over a situation or group.