Definition

1. Adjective:
   • Pitch-dark / profoundly dark: Describes an extreme, almost complete absence of light, where visibility is nearly zero. It implies a deeper, more impenetrable darkness than simply "tối" (dark).
   • Figuratively, ignorant / benighted: Used to describe a state of profound ignorance, lack of understanding, or being in the dark about a subject.

Usage Examples

• Adjective (Literal):
  • Trời không trăng sao, tối mù như mực. (There's no moon or stars; it's pitch-dark like ink.)
  • Căn phòng chẳng có cửa sổ, tối mù. (The room has no windows; it's profoundly dark.)
• Adjective (Figurative):
  • Về khoa học, anh ta tối mù. (When it comes to science, he is completely in the dark.)
  • Tôi tối mù về các thủ tục pháp lý này. (I am utterly ignorant about these legal procedures.)

Advanced Usage

• The term is often used for dramatic emphasis to intensify the concept of darkness, whether literal or metaphorical.
• It can describe a situation that is confusing, unclear, or hopeless, e.g., (The future of this project is completely obscure.)

Variants and Related Words

• Tối om (adj): Also means very dark, often interchangeable with "tối mù" in the literal sense.
• Tối đen (adj): Literally "black dark," another synonym for pitch darkness.
• Mù mịt (adj): Dense, thick (of fog, smoke); figuratively, obscure and confusing, similar to the figurative use of "tối mù."

Synonyms

• Pitch-black: Completely dark.
• Impenetrably dark: So dark that nothing can be seen through it.
• Benighted: In a state of moral or intellectual darkness.

Related Idioms

• Tối mù mịt: An intensified form, meaning profoundly and confusingly dark.
  • Lối vào hang tối mù mịt. (The cave entrance was profoundly and confusingly dark.)
• Mù tịt: A colloquial variant emphasizing total ignorance or lack of knowledge.
  • Hỏi nó toán thì nó mù tịt. (Ask him about math and he knows absolutely nothing.)