fundamental belief

noun phrase
UK /ˌfʌn.dəˈmen.təl bɪˈliːf/
US /ˌfʌn.dəˈmen.t̬əl bɪˈliːf/

A belief is a big idea that you think is true, and a fundamental belief is one of the most important ideas you trust.

Honesty is a fundamental belief in our family.


OTHER MEANINGS

2. A basic rule or idea that a group or system is built on.

Freedom of speech is a fundamental belief of the organization.

3. A strong personal idea that shapes how someone acts.

Her fundamental belief in kindness guides everything she does.

4. A core teaching of a religion or philosophy.

The fundamental belief of the community is to help others.