confidence or trust in a person or thing:faith in another's ability.
belief that is not based on proof:He had faith that the hypothesis would be substantiated by fact.
belief in God or in the doctrines or teachings of religion:the firm faith of the Pilgrims.
belief in anything, as a code of ethics, standards of merit, etc.:to be of the same faith with someone concerning honesty.
a system of religious belief:the Christian faith; the Jewish faith.
the obligation of loyalty or fidelity to a person, promise, engagement, etc.:Failure to appear would be breaking faith.
the observance of this obligation; fidelity to one's promise, oath, allegiance, etc.:He was the only one who proved his faith during our recent troubles.
Religion[Christian Theol.]the trust in God and in His promises as made through Christ and the Scriptures by which humans are justified or saved.
Idiomsin faith, in truth; indeed:In faith, he is a fine lad.
Latin fidem, accusative of fidēs trust, akin to fīdere to trust. See confide