無む知ち蒙もう昧まい

• 無む知ち

  無知 is a common word for ignorance, while 無知蒙昧 is a stronger, more formal yojijukugo emphasizing a deep lack of knowledge or enlightenment.

• 愚ぐ昧まい

  愚昧 also means foolishness or ignorance, but 無知蒙昧 combines both 'lack of knowledge' and 'unenlightened' nuances in a single compound.

• 無む知ち蒙もう昧まい

  Standard kanji form for this yojijukugo.

• 無む智ち蒙もう昧まい
  rarely-used kanji form

  Rarely used variant with 智 instead of 知.

A yojijukugo composed of 無知 (ignorance) and 蒙昧 (unenlightened, dark). The exact historical derivation is uncertain, but it is conventionally used to express profound ignorance.