Meaning of “uphold” - Learner’s Dictionary

uphold

verb [ T ] uk us /ʌpˈhəʊld/ (past tense and past participle upheld)
AGREE

to agree with a decision, especially a legal one, and say it was correct:

The court upheld the ruling.
SUPPORT

to support a decision, principle, or law:

Police officers are expected to uphold the law.

(Definition of “uphold” from the Cambridge Learner’s Dictionary © Cambridge University Press)