1570s, "to corrupt, contaminate," also "to trouch, tinge, imbue slightly" (1590s), from M.E. teynten "to convict, prove guilty" (late 14c.), partly from O.Fr. ataint, pp. of ataindre "to touch upon, seize" (see
attainder). Also from Anglo-Fr. teinter "to color, dye" (early