uncountable strong belief in or trust of someone or somethinghave faith in: I’m delighted to know you have such faith in me.
lose faith in: The public have lost faith in what the government is doing.
put your faith in (=decide to trust someone or something): Maybe we put too much faith in doctors and medicine.
restore/destroy your faith in: The attack has destroyed his faith in humankind.
blind (=unreasonable) faith: They seemed to accept everything he said with blind faith.