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cough up

B1 informal separable transitive
In simple words

To give money or information you don't want to give, or to push something up from your throat by coughing.

Literal meaning: To use a cough to bring something up from below — the physical sense is transparent; the financial/informational sense is idiomatic.

Meanings

1 B1 idiomatic informal

To produce money, especially an amount you are reluctant to pay.

"The landlord demanded they cough up the three months of unpaid rent immediately."

Grammar: separable
2 B2 idiomatic informal

To reveal information you have been keeping back, often under pressure.

"After an hour of questioning, the suspect finally coughed up the name of his accomplice."

Grammar: separable
3 B1 neutral

To expel mucus, blood, or another substance from the throat or lungs by coughing.

"The doctor was concerned when the patient began coughing up blood."

Grammar: separable
Usage notes

Very common in British English for paying reluctantly. Also used medically. The informal sense (money/information) is frequently used with a tone of annoyance or impatience.

Commonly used with

money cash blood information details phlegm

Forms

Base
cough up
I/you/we/they
3rd person
coughs up
he/she/it
Past simple
coughed up
yesterday
Past participle
coughed up
have + pp
-ing form
coughing up
continuous

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