the lack of knowledge or education

uneducated in general; lacking knowledge or sophistication

the illegitimate offspring of unmarried parents

ignorance resulting from not reading

a person unable to read

lacking in correct logical relation

2 make sth clearADV. greatly, vividtiy an incident which vividly illuminated the problems we faced.VERB + ILLUMINATE help (to) The study of the present also helps to illuminate the past. 

a condition of spiritual awareness; divine illumination

ant facts about something, rather than having

Antonym unimaginable