มั่วสุม(mûua sŭm)

Meanings

1VerbB2

[to] gather for illicit purposes

To assemble or congregate in a group for purposes that are illicit, immoral, or disorderly.

Examples

The village headman asked the group of teenagers not to congregate and make loud noises, disturbing the villagers late at night.
2VerbC1

[to] engage in vice as a group

To jointly indulge in immoral or illegal activities, especially drug use, gambling, or promiscuous behavior.