From Longman Dictionary of Contemporary Englishlook sharplook sharpHURRY British English old-fashioned used to tell someone to do something quickly If you look sharp, you might catch him before he leaves for London. → sharp
Examples from the Corpus
look sharp• Come on, boys, look sharp.• He's been training hard and looks sharp.• Hobert looked sharp, completing 10 of 13 passes.• They will look sharp for signs of senility and increasing pain-will they perhaps even hope for them?• So you can expect the geometric pattern lounge carpet to look sharp in years to come.• Although the costumes look sharp, the set is bare-bones and nondescript. 