FALSUS IN UNO DOCTRINE

falsus in uno doctrine (fal-s[schwa]s [orfawl-s[schwa]s] in yoo-noh). [fr. Latin falsus in uno, falsus in omnibus “false in one thing, false in all”] The principle that if the jury believes that a witness’s testimony on a material issue is intentionally deceitful, the jury may disregard all of that witness’s testimony. [Cases: Trial 187, 210; Witnesses […]