Definition

1. Idiomatic phrase:
   • Deep-rooted and firmly entrenched: Describes a habit, custom, problem, or characteristic that has existed for a very long time, is deeply ingrained, and is extremely difficult to change or eradicate.

Usage Examples

• Idiomatic phrase:
  • Thói quen hút thuốc của ông ấy đã thâm căn cố đế. (His smoking habit is deep-rooted and firmly entrenched.)
  • Sự tham nhũng trong cơ quan đó là thâm căn cố đế. (The corruption in that agency is deep-rooted and firmly entrenched.)
  • Những định kiến xã hội này đã trở nên thâm căn cố đế. (These social prejudices have become deep-rooted and firmly entrenched.)

Advanced Usage

• The phrase is often used to describe negative, persistent conditions that resist reform or improvement. It carries a connotation of something being stubbornly established over a very long period.

Synonyms

• Deep-seated: firmly established at a deep level.
• Ingrained: deeply embedded and difficult to remove.
• Inveterate: long-established and unlikely to change (often for habits).
• Hardened: firmly established and resistant to change.

Related Idioms

• Ăn sâu vào máu: (lit. to eat deep into the blood) to be in one's blood, to be second nature.
  • Tình yêu âm nhạc đã ăn sâu vào máu anh ấy. (His love for music is in his blood.)
• Trở thành cố tật: to become an inveterate habit or a chronic flaw.
  • Sự trì hoãn của cô ấy đã trở thành cố tật. (Her procrastination has become an inveterate habit.)