FluentPlex

mob up

verb
  1. To form a mob (i.e. a large group). (informal, intransitive)
  2. To join, ally with or be beholden to the Mafia. (informal, intransitive)
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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.