Both Uses of

disdain
in
King Lear

In wisdom I should ask thy name; But since thy outside looks so fair and warlike, And that thy tongue some say of breeding breathes, What safe and nicely I might well delay By rule of knighthood, I disdain and spurn: Back do I toss those treasons to thy head; With the hell-hated lie o'erwhelm thy heart; Which,—for they yet glance by and scarcely bruise,—This sword of mine shall give them instant way, Where they shall rest for ever.†
Scene 5.2

disdain = a lack of respect

—taught me to shift Into a madman's rags; to assume a semblance That very dogs disdain'd; and in this habit Met I my father with his bleeding rings, Their precious stones new lost; became his guide, Led him, begg'd for him, sav'd him from despair; Never,—O fault!†
Scene 5.2 *

Definition:

to disrespect or reject as unworthy