slacker

noun5

1. •
   One who procrastinates or is lazy; one who does not do their fair share or pull their own weight.

   • Some evil fellows said behind his back that Beowulf was white-livered and a slacker. — 1961
2. •
   A person lacking a sense of direction in life; an underachiever.

   • You're a slacker, McFly. You've got aptitude, but you don't apply yourself. You remind me of your father: He was a slacker, too. — 1985
3. •
   (US, old-fashioned) A person who seeks to avoid military service.

   • [S]everal hundred prisoners captured in North Jersey slacker raids last week and sent to this camp are being Inducted into military service today[…] — 1918
4. •
   A member of a certain 1990s subculture associated with Generation X.

   • Gen Xers were said to be lazy—“slackers” in the parlance of the time—who didn’t exhibit the straightforward work ethic of their predecessors. — 2010
5. •
   (slang, rare) A user of the Slackware Linux distribution.

   • I'm a slacker from way back btw — 1996