Definify.com

Webster 1913 Edition

adv.

In a illustrious manner; conspicuously; eminently; famously.

Milton.

adv.

Conspicuously; nobly; eminently; with dignity or distinction.

Gloriously; in a way to manifest glory. The redemption of man displays illustriously the justice as well as the benevolence of God.

illustriously ‎(comparative more illustriously, superlative most illustriously)