Meanings
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Example Sentences
1
I saw him whispering to his friends. He must be up to something.
2
She kept checking her phone suspiciously. I knew she was up to something.
3
The kids giggled and ran away. They are definitely up to something mischievous.
4
He always has a sly smile when he's up to something.
5
The detective had a hunch that the suspect was up to something illegal.