- up
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1. mod. happy; cheery; not depressed; upbeat.□ I’m up today. Let’s celebrate.□ This is not an up party. Let’s cruise.2. tv. to increase something.□ She tried to up the price on me, thinking I wouldn’t notice.□ The bank upped its rates again.3. in. to take a stimulant drug.□ She has to up every morning.□ Ted upped before going in to take the test.
Dictionary of American slang and colloquial expressions. 2015.