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English definition of “under-”

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under-

prefix uk   /ʌn.dər-/ us    /-dɚ-/
not enough or not done as well or as much as is necessary: undercooked potatoes underprivileged children We're all overworked and underpaid. His boss says he's under-performing (= not doing as well as he should) at work.
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below: underwear an underpass
(Definition of under- prefix from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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