The phrase "brown nosed" is typically used to describe someone who sucks up or flatters others in attempt to gain favor or advantage. Antonyms for "brown nosed" include terms that describe the opposite behavior, such as honest, straightforward, principled, and independent. These antonyms are associated with individuals who are not afraid to speak their minds, even if it means disagreeing with others. They are also associated with those who value their integrity over any temporary gains they might achieve through insincere flattery or manipulation. In short, the antonyms for "brown nosed" describe individuals who are genuine, authentic, and true to themselves.