The patterns of use for the address term dude are outlined, as are its functions and meanings in interaction. Explanations are provided for its rise in use, particularly among young men, in the early 1980s, and for its continued popularity since then. Dude is used mostly by young men to address other young men; however, its use has expanded so that it is now used as a general address term for a group (same or mixed gender), and by and to women. Dude is developing into a discourse marker that need not identify an addressee, and more generally encodes the speaker's stance to his or her current addressee(s). Dude indexes a stance of cool solidarity, a stance which is especially valuable for young men as they navigate cultural Discourses of young masculinity, which simultaneously demand masculine solidarity, strict heterosexuality, and nonconformity.