Faithful — the collective members of the church incorporated into it through sacramental baptism.
Fall of Man — the willful transition of the first humans from a state of original holiness, in communion with God, to a state of guilt and perennial disobedience
Family wage
Father (cleric) — a traditional title of priests
Father, God the — a name for the First Person of the Blessed Trinity
Five Ways — see: Quinque Viæ
Font, Baptismal — see: Baptismal font
Font, Holy water — see: Holy water font
Friar
Full communion