faith
n. C / Un. strong belief or trust in someone or something. It can also mean a deep religious belief, even without physical proof.
n. complete trust or confidence in a person, thing, or concept. Alternatively, a strong belief in a religion or its doctrines, typically based on spiritual conviction rather than empirical proof.
I have full faith that she will do the right thing.
After the scandal, the company worked hard to restore the public's faith in its products.
The philosopher argued that scientific inquiry and religious faith are not mutually exclusive, as they address fundamentally different questions about human existence.
Uncountable when referring to trust or belief; countable when referring to a specific religion. Often followed by the preposition 'in'.