(UK, transitive, literally) To be ranked at (something), based on polling.
The Tories are on twenty-five percent in that constituency.
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(intransitive, literally) To be performative or funny in a wearying manner.
You don't have to be on all the time.
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(transitive, literally) To be responsible for (something).
That task is on you.
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Add your own interpretation of "be on".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.