Phrasal Verbs
to be on your feet There were no seats left so I had to stand up. You'll look taller if you stand up straight.
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to deliberately not meet someone you have arranged to meet, especially someone you are having a romantic relationship with I've been stood up!
to remain valid even when tested, examined closely, etc. His argument simply doesn't stand up to close scrutiny. I'm afraid this document will never stand up in a court of law.