Middle English confessen "to admit, confess, (of a priest) hear a confession," borrowed from Anglo-French confesser (also continental Old French), derivative of confés "confessed, shriven," going back to Latin confessus, past participle of confiteor, confitērī "to admit (a fact, the truth of a statement or charge), reveal," from con- con- + fateor, fatērī "to accept as true, acknowledge, profess," probably a verbal derivative based on Indo-European *b^hh₂-to- "spoken" or *b^hh₂-t- "who speaks," from the verbal base *b^heh₂- "speak, say," whence also Latin for, fārī "to speak, say" — more at ban entry 1