To uphold something means to support or defend it.
When people use the word "uphold," they usually mean to give strong backing to an idea, decision, or way of doing things. It's like standing behind someone you believe in, but not just emotionally – also with actions and words that show you care about what they're doing. Think of a judge upholding the law, meaning following it carefully and sticking to its rules. Or someone holding onto their values when faced with criticism or pressure from others.
How common is "uphold"?
Word uphold is considered uncommon in modern English. It has a balanced usage among all categories: speech, fiction, newspapers and academic texts.
Definitions
verb
To hold up; to lift on high; to elevate.
To keep erect; to support; to sustain; to keep from falling
Example: Wednesday June 02, 2021, Has the Northern Ireland Protocol undermined the United Kingdom?
Similarly, both the Government and the EU argued at the time the deal was agreed that they were upholding the Good Friday Agreement by implementing the Protocol.
To support by approval or encouragement; to vindicate; to confirm (something which has been questioned)