illiterate and ignorant; uneducated and uninformed
A yojijukugo describing someone who lacks both formal learning and worldly knowledge. Often used critically or self-deprecatingly.
He is uneducated and ignorant, but has a wealth of experience.
I'm ashamed of my own ignorance and lack of education.
A yojijukugo combining 無学 (no learning) and 無知 (no knowledge). The exact origin is uncertain, but it follows a common pattern of pairing synonymous or complementary terms for emphasis.