belief

noun6

1. •
   the state of holding in the mind that something is real or correct

   • It's my belief that the thief is somebody known to us.
2. •
   Faith or trust in the reality of something; often based upon one's own reasoning, trust in a claim, desire of actuality, and/or evidence considered.

   • My belief is that there is a bear in the woods. Bill said he saw one.
   • Based on this data, it is our belief that X does not occur.
3. •
   The quality or state of believing.

   • My belief that it will rain tomorrow is strong.
4. •
   Religious faith.

   • She often said it was her belief that carried her through the hard times.
5. •
   Something believed.

   • The ancient people have a belief in many deities.
6. •
   [in the plural] One's religious or moral convictions.

   • I can't do that. It's against my beliefs.