Simple past tense and past participle of smarten.(verb)
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Use "smartened" in a sentence
""I think it was really good for me because I came in there young and immature and they kind of smartened me up and put you in your place," Watkins said."
"Overnight, a host of local real-estate companies smartened to the "valuation" game."
"The first was Apple's successful transmogrification of the baseline devices -- PCs became Macs by way of Macintosh, MP3 players were now pods, and the cellular telephone smartened into simply phones."