c. 1400, disclaimen, "renounce, relinquish, or repudiate a legal claim," originally in a feudal sense, from Anglo-French disclaimer(c. 1300), Old French desclamer "disclaim, disavow," from des- (see dis-) + clamer "to claim," from Latin clamare "to cry out, shout, proclaim," from PIE root *kele- (2) "to shout." Meaning "disavow any connection with, reject as not belonging to oneself" is from 1590s. Related: Disclaimed; disclaiming.
