Definition from Wiktionary, the free dictionary
- A state of secrecy.
- I'll tell you, but keep it on the down low.
- (sexuality) The state of being a man who secretly sleeps with people other than his partner.
- (African American Vernacular, sexuality) The state of being a man who secretly sleeps with other men.
- In all senses, always preceded by on the.
- (of a person) Undercover or lying about one's identity.
- (African American Vernacular, of a man) Purporting to be heterosexual while engaged in sex with men.