student asking question

What does "be onto something" mean?

teacher

Native speaker’s answer

Rebecca

To "be onto something" means that you have started to find a good solution or solve a problem. It also means that you are discovering or thinking about something in a new way! "They're onto us" means that you are about to be found for doing or planning something. Ex: That's a good idea, Kim. I think you're onto something with approaching the problem in a new way. Ex: Do that dance move again! You're onto something for our new dance choreography. Ex: George is onto us about the surprise birthday party. How do we keep it a secret?

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