noun, na-adjective
illiterate and ignorant; uneducated and uninformed
A yojijukugo describing someone who lacks both formal learning and worldly knowledge. Often used critically or self-deprecatingly.
彼は無学無知だが、経験は豊富だ。
He is uneducated and ignorant, but has a wealth of experience.
無学無知な自分が恥ずかしい。
I'm ashamed of my own ignorance and lack of education.
無学 means 'uneducated' or 'illiterate', focusing on lack of formal learning, whereas 無学無知 adds the dimension of general ignorance.
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.