Meaning

noun freedom from doubt; belief in yourself and your abilities

noun a feeling of trust (in someone or something)

noun a state of confident hopefulness that events will be favorable

originFrom Middle English confidence, from Latin cōnfīdentia (possibly via Old French confidence), from cōnfīdō (“believe, confide in”) from con- (“with”) + fīdō (“trust”). By surface analysis, confide + ence.

Etymology from Wiktionary, CC BY-SA 3.0