English illustrious

← English (suffix)

← English ous (suffix)

← Proto-Indo-European *lewk- (derived)

← Proto-Indo-European *lewh₃- (mention)

← Latin illūstris (derived)

← Latin illūstrō (mention)

← Latin in- (mention)

← Latin lustrō (mention)

← Latin lustrō (mention)

→ English lustrious (mention)

→ English illustriously (suffix)

→ English illustriousness (suffix)

→ English nonillustrious (prefix)

→ English unillustrious (prefix)