bruh /bɹʌ/exclamation 3noun 1forms 1 exclamation3 •(slang) Expressing amazement or shock.You're moving to Greenland? Bruh! •(slang) Expressing a feeling that something is stupid, inappropriate, useless or even weird to say, think or do.Person 1: I poured canola oil into my car engine! Person 2: Bruh.Person 1: I think the word partisan derives from how they parted their hair. Person 2: Bruh. •(slang) Expressing disappointment.Person 1: Your favorite show got cancelled! Person 2: Bruh.Person 1: I just ate your dinner. Person 2: Seriously, bruh. noun1 •(no longer used) The rhesus macaque.[…] in adolescence, and still more in youth, it is no less certain that the bruh is both good-natured and intelligent. — 1838 formsbruhs