believe
US /bɪˈliːv/
UK /bɪˈliːv/

1.
accept (something) as true; feel sure that something is true
:
•
I believe that he is telling the truth.
•
Do you really believe in ghosts?
2.
have faith in the truth or existence of something
:
•
She believes in the power of positive thinking.
•
Many people believe in a higher power.