Grown-ass

adj, slang

Definitions

Adjective
  1. 1
    grown-up; adult; often used in reproach of an adult's immaturity, or, conversely, in assertion of maturity. US, not-comparable, slang, vulgar

    "They call it a sport, but to me it looks like a bunch of grown-ass men running around like children."

Etymology

From grown + -ass.

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