slubber (verb) 

To slubber (SLUH-ber) is to work hastily and carelessly; to perform in a slipshod manner. As used by Shakespeare in The Merchant of Venice: “I saw Bassanio and Antonio part; / Bassanio told him he would make some speed / Of his return; he answered, ‘Do not so. / Slubber not business for my sake, Bassanio, / But stay the very riping of the time.’”