student asking question

What does "pick up on sth" mean?

teacher

Native speaker’s answer

Rebecca

In this context, "to pick up on sth" is a casual phrase that means to catch or notice something. "Pick" must be used with the words "up" and "on" after, or the meaning of the phrase changes. Ex. He didn't pick up on her lack of interest in their conversation. Ex. He picked up on a noise in the middle of the night, so he went to investigate.

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