It’s about time. We are now on Instagram!
popularized 1994, but the meaning "person who shirks work" dates to 1897; agent noun from slack (v.). In early use also slackster (1901). Cf. Old English sleacornes "laziness," which is not, however, an agent noun. Related: Slackerly; slackerish.
: this lame ''slacker'' attitude a la Jeff Spicoli from Fast Times at Ridgemont Highnoun
An indolent and detached person; shirker; idler: The epitome of the slang-slinging, wise-cracking slacker (1898+)
[revived in the 1990s to describe a sort of cultural anomie]