street fighter

or street-fight·er

noun
  1. a person whose style of fistfighting was learned in the streets, as opposed to a trained or proficient boxer.
  2. a person who deals with others in an aggressive, cunning manner.
Related formsstreet-fight·ing, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018