When Something Is Unchallenged?

If something is unchallenged, that means no one is questioning or opposing it. If none of your classmates raises an objection when your school introduces a new dress code, you can describe the rules as unchallenged.

What is meaning of unchallenged?

: not questioned, disputed, or opposed : not challenged an unchallenged assumption unchallenged authority …

What is an unchallenged assumption?

We all make assumptions in order to live our lives. At the most basic level we assume our parents/grandparents, for example, will continue to wake up in the morning, be able to drive or get around easily, have enough money, avoid falling over, find friends etc.