1a(1) : one that spends or consumes extravagantly and without thought for the future. (2) : a dissolute person. b : one that uses wastefully or causes or permits waste a procedure that is a waster of time. c : one that lays waste : destroyer.

What is a waster slang?

noun layabout, loser, good-for-nothing, shirker, piker (Austral. & N.Z. slang), drone, loafer, skiver (Brit. slang), idler, ne'er-do-well, wastrel, malingerer, saddo (Brit.

Where does the word waster come from?

From Middle English wastere, waister, wastar, wastour, equivalent to waste +‎ -er.