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Noun: plug-ugly  'plúg'úg-lee
Usage: informal
  1. Someone who bullies weaker people
    "The plug-ugly tried to intimidate the new students"

Derived forms: plug-uglies

Type of: bully, hooligan, ned [UK, informal], roughneck [informal], rowdy, ruffian, scally [UK, informal], tough [informal], yob [Brit, informal], yobbo [Brit, informal], yobo [Brit, informal]