Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "look sharp" in a sentence
"One's got to look sharp these days to see breakfast's done proper and the rooms cleaned and so forth."
"However I'm getting strong fast and Conscripts& Deserters will have to look sharp I am glad you had Ralph and the Genl with you at Christmas (mine was spent in bed); and very sorry to hear that Hattie was so sick with cold and Neuralgia."