attainder noun2 •(rare) The state a prisoner entered once a death sentence (usually for treason) had been issued; the state of being stripped of all civil rights.Grandpa Piper led thereto by the arm […] and himself thrust into a chair, to support the character of dummy to Henry's prearranged attainder. — 1930 •(no longer used) A stain; a state of dishonour or condemnation.He lived from all attainder of suspects. — 1593 formsattainders