English definition of “faith”
TRUST [U] › the belief that someone or something is good, right, and able to be trusted: Have faith in me. I won't let you down.
STRONG BELIEF [U] › strong belief in a god or gods: Throughout her illness, she never lost her faith in God.
RELIGION [C] › a religion: the Jewish and Christian faiths
in good faith › If you act in good faith, you believe that what you are doing is good, honest, or legal: Mr Daniels claims the money was given to him in good faith.