'Illustriously' definitions:
Definition of 'illustriously'
(from WordNet)
adverb
In an illustrious manner; "Einstein, the illustriously famous physicist of the 20th century"
Definition of 'Illustriously'
From: GCIDE
- Illustriously \Il*lus"tri*ous*ly\, adv. In a illustrious manner; conspicuously; eminently; famously. --Milton. [1913 Webster]