A. uneducated
B. uncivilised
C. unintelligent
D. unknown
Illustrious : well known, respected, and admired for past achievements.
Uneducated : having or showing a poor level of education.
Uncivilised : (of a place or people) not socially, culturally, or morally advanced.
Unintelligent : having or showing a low level of intelligence.
Unknown : not known or familiar.
Antonym of Illustrious is Unknown
