mobbed up

Verb

mob up (third-person singular simple present mobs up, present participle mobbing up, simple past and past participle mobbed up)

1. (informal, intransitive) To form a mob (i.e. a large group).
2. (informal, intransitive) To join, ally with or be beholden to the Mafia.
3. (informal, rare, transitive) To gang up on.
   • Gooderson tells me you were not unadjacent to mobbing up R.B.-J. and Sargent in the changing-rooms, Healey.1991 September, Stephen Fry, chapter 1, in The Liar, London: Heinemann, →ISBN, section I, page 18