To stand up to is to refuse to be bullied, or to survive hard use. Stand up to the pressure.
The two senses share the idea of not giving way. Boots that stand up to a winter are praised in exactly the words used of a person.
1phrasestand up toTo refuse to be bullied, or to survive hard use.
“Somebody had to stand up to him and nobody did for years.”
stand up to is a phrase.
Practised in Phrasal Verbs