Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD ORIGIN

c.1600, "to free from obligation;" 1630s, "to refuse to oblige," from French désobliger (c.1300), from des- (see dis-) + Latin obligare (see oblige). Related: Disobliged; disobliging.