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1. Rate something lower than its real/actual value , under appreciate.
2.Estimate/ rate someone lower than his/her actual potential, qualifications.
You underestimated that problem because you are not familiar with it.
Don't underestimate 'em simply because they are young.

Julian: Ask your lil bro to quit that chalenge it is very hard for him.
John: Don't underestimate my little brother his able.
by julianmosha December 26, 2016
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May 7 Word of the Day
Paper product used as a barrier against unwanted messes, such as the liner at the bottom of a bird cage.
Please put a New York Times under that before it gets all over the place.
by Phaedrus331 February 12, 2021
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an estimation that is too low; an estimate that is less than the true or actual value
I think Kendall under-estimated allen when they went out to the movies.
by AKB jr January 28, 2008
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