What is another word for slacker?
Pronunciation: [slˈakə] (IPA) 
The word slacker refers to someone who is lazy, unmotivated and lacks discipline. Synonyms for slacker include idler, couch potato, loafer, shirker, underachiever, procrastinator, and layabout. Each of these words describes someone who lacks ambition and who is not working towards their goals. An idler is someone who does not engage in any productive activity. A couch potato is someone who spends most of their time sitting around watching TV. A loafer is someone who avoids work. A shirker is someone who avoids doing their responsibilities. An underachiever is someone who does not reach their potential, while a procrastinator is someone who puts things off until the last minute. Finally, a layabout is someone who is too lazy to do anything.
