Meaning of “weaken” in the English Dictionary

"weaken" in English

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weakenverb [ I or T ]

uk /ˈwiː.kən/ us /ˈwiː.kən/

C1 to (cause to) become less strong, powerful, determined, or effective:

You could see the poor dog weakening daily as the disease spread through its body.
The bill would seriously weaken environmental protections.
She's weakening - ask her some more questions and see if she confesses.

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(Definition of “weaken” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"weaken" in American English

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weakenverb [ I/T ]

us /ˈwi·kən/

to make or become weak or weaker:

[ I ] The country’s economy continues to weaken.
[ T ] Long exposure to vibration can weaken aircraft parts.

(Definition of “weaken” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"weaken" in Business English

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weakenverb [ I or T ]

uk /ˈwiːkən/ us

ECONOMICS, POLITICS, FINANCE to become or make something or someone become less powerful, successful, effective, etc.:

The plan has divided the country and weakened the government.
They will reduce interest rates if the economy weakens.
They slashed profit growth forecasts yesterday in the face of poor sales and weakening consumer spending.

STOCK MARKET, FINANCE if markets, investments, etc. weaken, or if something weakens them, they fall in value:

weaken against sth Sterling might weaken against the euro if the dollar does.
The shares weakened 2.5p to 225.25p.
German producer prices weakened in July.

(Definition of “weaken” from the Cambridge Business English Dictionary © Cambridge University Press)