The Collaborative International Dictionary
Antonomastically
Antonomastic \An`to*no*mas"tic\, a. Pertaining to, or characterized by, antonomasia. -- An`to*no*mas"tic*al*ly, adv.
Wiktionary
antonomastically
adv. In terms of, or by means of, antonomasia.
Usage examples of "antonomastically".
What is common to all the sacraments is attributed antonomastically to this one on account of its excellence.