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English definition of “run down (someone/something)”

run down (someone/something)

(WEAKEN) phrasal verb with run    /rʌn/ verb (present participle running, past tense ran  /ræn/, past participle run)
to lose energy , power , or strength : By 1923 the radio boom seemed to be running down.
(Definition of run down (someone/something) (WEAKEN) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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