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up on something
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with an extensive knowledge concerning current topics and events
What is the origin of the idiom "up on something" and when to use it?
The idiom "up on something" likely derives from the idea of gaining a higher or more complete understanding of a particular subject or topic. The use of "up" in this context implies an increase in knowledge or familiarity. While the precise origin of this idiom is not documented, it has been in use in the English language since 19th century. This expression is used to convey a person's familiarity, knowledge, or awareness of a specific subject, topic, or issue. It indicates that someone is well-informed, educated, or experienced in that area.
Exempel
The investigators decided to turn the heat up on the suspect by gathering more evidence and conducting thorough interrogations.
We set our shy friend up on a blind date to help him meet new people.
Let me catch you up on the news from yesterday.
They took the company up on its offer for a free trial.
The cat curls up on the couch every night, waiting for its owner to come home.
