Definition

1. Adjective:
   • Close / Tight: Describes a relationship, connection, or coordination that is very strong, intimate, and without gaps or looseness.
   • Strict / Rigorous: Describes a system, rule, control, or logic that is severe, precise, and leaves no room for error or laxity.
   • Coherent / Tight-knit: Describes an argument, reasoning, or structure that is logically sound and well-organized, with all parts fitting together seamlessly.

Usage Examples

• Adjective:
  • Hai công ty hợp tác một cách chặt chẽ. (The two companies cooperate closely.)
  • Nhà trường có nội quy rất chặt chẽ. (The school has very strict regulations.)
  • Lập luận của anh ấy rất logic và chặt chẽ. (His argument is very logical and coherent.)
  • Cần có sự giám sát chặt chẽ hơn. (There needs to be closer supervision.)

Advanced Usage

• Used to describe abstract concepts like leadership, management, or solidarity, emphasizing thoroughness and lack of weakness.
  • sự lãnh đạo chặt chẽ (close/rigorous leadership)
  • tư duy chặt chẽ (rigorous thinking)

Variants and Related Words

• Chặt (adj): Literally "tight" or "firm" (as in a knot), or "severe" (as in a punishment). It is the root adjective from which "chặt chẽ" is derived, often implying physical tightness or severity.
• Nghiêm ngặt (adj): Strict, stringent. Often interchangeable with "chặt chẽ" in contexts of rules and control, but "nghiêm ngặt" may emphasize authority and discipline more.
• Sát sao (adj): Close, meticulous. Often used for supervision or monitoring that is very attentive and detailed.

Synonyms

• Close: (e.g., close cooperation).
• Strict: (e.g., strict rules).
• Rigorous: (e.g., rigorous proof).
• Coherent: (e.g., coherent argument).
• Tight-knit: (e.g., tight-knit community).

Related Idioms and Phrases

• Chặt chẽ như bưng: As tight as a sealed package; meaning extremely tight, secure, or secretive, leaving no information leak.
  • Kế hoạch được giữ chặt chẽ như bưng. (The plan was kept under extremely tight wraps.)

adj

1. Close
   • phối hợp chặt chẽ
     to coordinate closely
   • đoàn kết chặt chẽ
     close solidarity
   • sự lãnh đạo chặt chẽ
     close leadership
   • quản lý thị trường chặt chẽ
     close control of the market