Serious is a related term of illustrious.
As adjectives the difference between serious and illustrious
is that serious
is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while illustrious
Without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn.
Important; weighty; not trifling; leaving no room for play; needing great attention; critical.
- It was a surprise to see the captain, who had always seemed so serious , laugh so heartily.
Really intending what is said; being in earnest; not jesting or deceiving; meaningful.
- This is a serious problem. We'll need our best experts.
- After all these years, we're finally getting serious attention.
* See also
* trifling, unimportant
* (intending what is said) jesting
* srs (abbreviation)
* dead serious