one–up

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one–up /ˌwʌnˈʌp/ verb
one–ups; one–upped; one–upping
one–up
/ˌwʌnˈʌp/
verb
one–ups; one–upped; one–upping
Learner's definition of ONE–UP
[+ object] US, informal
: to get an advantage over (someone)
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