settled belief
noun phraseUK /ˈset.əld bɪˈliːf/
US /ˈset.əld bɪˈliːf/
A settled belief is something you feel sure is true and do not doubt.
After years of study, she had a settled belief that kindness makes people happier.
OTHER MEANINGS
2. A belief that has become fixed and is no longer questioned or changed.
His settled belief in hard work shaped every choice he made.
3. A calm, steady trust in something or someone.
She spoke with a settled belief that her team would succeed.
4. A firmly held idea shared by a group over time.
The village had a settled belief that the old bridge brought good luck.