Meaning 1 · most common
defend yourself against someone or something
to refuse to accept unfair treatment from a person or group, even if they have more power than you.
Examples
She finally stood up to her boss and explained why she deserved a promotion.
A: I heard you argued with your landlord. What happened?
B: I just had to stand up to him because he kept ignoring my complaints.
Common mistake
Not: He never stands up against his boss.
Say: He never stands up to his boss.
'Stand up TO' a person; 'stand up against' is more for causes or ideas.
More on “defend yourself against someone or something”Another example · Tell it apart · Goes with · Tip
Another example
In my opinion, it’s important to stand up to people who try to take advantage of you, even if it feels uncomfortable.
Tell it apart
She stood up to him.
She stood up for him.
Goes with
- stand up to + oppressor