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he spent part of the proceeds on smartening up his office
Acquire more common sense; behave more wisely
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if you don't smarten up soon, you'll find yourself out on the street
Make one's appearance smarter
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I'd like to smarten up and shave
Web Definitions:
Smarten (1976–2003) was an American Thoroughbred racehorse and successful sire. Bred in Maryland by Jim and Eleanor Ryan and raced under their Ryehill Farm banner, he had a record of 27: 11-8-2 with career earnings of $716,426.