| 1. | to make more trim or spruce; improve in appearance (usually fol. by up): Try to smarten up your outfit. |
| 2. | to make brisker, as a pace. |
| 3. | to sharpen the judgment or broaden the experience of; educate (usually fol. by up): Someone has to smarten him up about dealing with people. |
| 4. | smarten up,
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