Definition

1. Verb phrase:
   • To be convinced; to be certain; to firmly believe: To hold a strong, unwavering belief in the truth or certainty of something, often based on evidence, trust, or personal conviction.

Usage Examples

• Verb phrase:
  • Tôi tin chắc là anh sẽ thành công. (I am certain that you will succeed.)
  • Nó tin chắc vào sức nó. (He is sure of his own strength.)
  • Chúng tôi tin chắc vào kết quả này. (We are convinced of this result.)

Advanced Usage

• Used to express a high degree of subjective certainty, stronger than simply "tin" (to believe). It often introduces a clause stating the believed fact.
  • Cô ấy tin chắc rằng câu trả lời là đúng. (She is firmly convinced that the answer is correct.)

Variants and Related Words

• Tin tưởng (v): to trust, to have faith in. This focuses more on trust in a person or entity, while "tin chắc" focuses on certainty of a fact or outcome.
• Chắc chắn (adj/adv): sure, certain. This can function as an adjective or adverb, whereas "tin chắc" is a verbal phrase describing the state of belief.

Synonyms

• Be convinced: to be persuaded that something is true.
• Be certain: to have no doubt.
• Firmly believe: to hold a belief strongly.

Related Idioms

• Tin chắc như đinh đóng cột: To be as sure as nails are driven into a column; to be absolutely certain.
  • Về chiến thắng, anh ấy tin chắc như đinh đóng cột. (Regarding victory, he is as sure as can be.)