The Oxford Thesaurus An A-Z Dictionary of Synonyms - wastrel n.

1) spendthrift, profligate, waster, prodigal, big spender, squanderer: That wastrel went through his inheritance in a year. 2) idler, layabout, malingerer, loafer, shirker, good-for-nothing, ne'er-do-well, Chiefly Brit drone, Slang Brit skiver: The workhouse is the place for wastrels like you!