Study the phrasal verbs. Lead-in.

Boss: “Pete, you’ll have to stand aside. Mike will take your place.”

Employee: “No, that’s unfair. I’ll stand up for my rights!”

So, the employee stands up to his boss.

Girl: “What do these letters, L O L, stand for?”

Man: “Stand back from the box, it could be dangerous.”

Daniel always stands out, he’s smart and creative.

That’s why he often stands in for his boss when the latter is away on business.

More phrasal verbs with STAND …

stand aside  quit a job/ position so another person can take it on:
Mary decided to stand aside in favour of her elder sister who was in a more difficult situation.
move towards one side to make room for sb:
We stood aside to let the guests pass.
stand back (from sth)move back or stand at a distance from sth:
Mike told the others to stand back from the suspicious bag.
stand by  be ready and waiting to act:
The fire brigade was standing by.
help sb out in a difficult situation:
“I will always stand by you,” she whispered quietly to Mark.
not act when sth negative is going on:
He just stood by watching them die.
stand for  mean, especially about abbreviations:
What does “UNO” stand for?
agree with sth, approve, or accept sth:
I do not share the ideas this company stands for.
stand in for  substitute sb temporarily:
My colleague will stand in for me while I’m away on business.
stand out  be noticeable, remarkable, or prominent (=outstanding):
Austin will easily stand out from the rest of the staff as more experienced and qualified.
stand up  be in an upright position, get to your feet:
The students stood up the moment the teacher entered the classroom.
stand up for  protect, defend sb:
Always stand up for yourself and never allow others to humiliate you!
stand up to  (~sb) not tolerate bad treatment/ attitude from sb:
She was brave enough to stand up to her boss.
(~sth) resist and last long despite the poor treatment:
This material is developed to stand up to severe winters and low temperatures. 

Practice