full retard noun2 •(slang, offensive) A state of engaging in extreme levels of stupidity.Everyone is on both sides is going full retard about this Executive Order from Trump. No one is thinking rationally. — 2018 •The setting on a magneto when the ignition spark occurs as late as possible, just before the piston reaches top dead center.It is characteristic of the usual magneto to give an ignition spark at a somewhat lower speed with the spark control in the full advance than in the full retard position. — 1911
