Princely is a related term of illustrious.
As adjectives the difference between princely and illustrious
is that princely
is relating to a prince; regal; royal while illustrious
As an adverb princely
is in the manner of a royal prince's conduct.
Relating to a prince; regal; royal.
Befitting a prince.
- princely birth or character
- a princely sum of money
* regally, grandly
In the manner of a royal prince's conduct.
- My appetite was not princely got. — Shakespeare.