air up
B2 informal separable transitive
In simple words
To put air into a tyre or something that needs to be filled with air.
Literal meaning: To fill something up with air — bringing the air level upward to the correct pressure.
Meanings
1 B2 informal
To inflate a tyre or other inflatable object using air.
"I need to stop at the garage to air up my front tyre — it looks flat."
Grammar: separable
Usage notes
Predominantly North American (especially American) English. British English speakers are more likely to say 'pump up' or 'inflate'. Most commonly used for car or bicycle tyres.
Commonly used with
tyre tire ball bicycle pressure tube
Forms
Base
air up
I/you/we/they
3rd person
airs up
he/she/it
Past simple
aired up
yesterday
Past participle
aired up
have + pp
-ing form
airing up
continuous
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Synonyms
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