straighten up
US /ˈstreɪtən ʌp/
UK /ˈstreɪtən ʌp/
1.
to make something tidy or put it in order
:
•
Please straighten up your room before you go out.
•
She spent the morning straightening up the living room.
2.
to stand or sit upright after slouching or bending
:
•
He straightened up and looked me in the eye.
•
The old man slowly straightened up from his stooped position.
3.
to improve one's behavior or performance
:
•
He needs to straighten up if he wants to keep his job.
•
The coach told the team to straighten up and play harder.