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v. un·der·per·formed, un·der·per·form·ing, un·der·per·forms
1. To perform not as well as (something else): three stocks that underperformed the market as a whole.
2. To perform (a musical or theatrical work, for example) too seldom: In recent years, her plays have been underperformed.
To exhibit a level of performance that is below the standard: a company that underperformed last year.
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|Noun||1.||underperformer - a student who does not perform as well as expected or as well as the IQ indicates|
|2.||underperformer - a business that is less successful than expected|