Examples of 'was up to something' in a sentence

Meaning of "was up to something"

Was up to something: This phrase implies that someone was doing something secretive or suspicious, suggesting that their actions were not entirely transparent

How to use "was up to something" in a sentence

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was up to something
I should have known this guy was up to something.
We knew he was up to something and we found out.
You should have known my mother was up to something.
We knew he was up to something out of the ordinary.
I knew that scheming little skeezer was up to something.
Only when he was up to something shady.
I always suspected that your old man was up to something.
I am sure he was up to something that night.
I knew that shaggy beach ball was up to something.
She was up to something in the attic going through all the papers.
But then your father was up to something.
Wilbur was up to something in the basement.
I should have known she was up to something.
She was up to something else.
I knew this guy was up to something.

See also

Takako was up to something when she reqested that wedding planner.
With the priest he was up to something else.
He was up to something.
But it was obvious the guy was up to something.
Because he was up to something interesting.
She was paranoid her agent was up to something.
Ng she was up to something.
I should have suspected he was up to something.
But he was up to something else.
I knew that dirty rat was up to something.
Leia was up to something.
Told you the priest was up to something.
Jake was up to something.
I knew that tween menace was up to something.
I knew he was up to something so I followed him.
I told you your mother was up to something.
He was up to something and I felt it.
Should have suspected he was up to something when he calmed down.
There was this moment back in Florida when I suspected Mason was up to something.
I told you he was up to something big.
We knew he was somehow special, and we knew he was up to something.
He knew his father was up to something sinister.
If he was up to something against you, he would get you himself.
I was sure that he was up to something.
Dimitri was up to something - and it would be spectacular.
Like she knew he was up to something.
Wilbur was up to something in the basement . We ought to wait.
But we knew he was up to something.
Why did they choose this particular moment? Unless Vladi was up to something.
I thought she was up to something.
Little did it know, the snake knew the little mouse was up to something.
Stands to reason he was up to something sketchy.
Why are you so thoughtless? You should have known my mother was up to something.
They knew he was up to something.
What he could not make out was how I knew… when he was up to something.

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