imperceptible

imperceptible — adjective

1. too small, slow, or faint for a person to notice or feel.

1.形容詞B2
釋義

too small, slow, or faint for a person to notice or feel.

例句

Over many years, the glacier moved at an almost imperceptible speed, reshaping the valley floor.

collocation: almost imperceptible

Leila noticed an imperceptible shift in her mother's tone that others missed.

imperceptible + shift / change / difference

同義詞
  • unnoticeable

    less formal and more common in everyday speech; imperceptible is more precise for extreme subtlety

  • indiscernible

    very close in meaning but slightly more formal; often used for visual differences

  • subtle

    broader in meaning; can describe cleverly indirect or refined details, not just extremely slight ones

反義詞
  • perceptible

    direct antonym; the exact opposite in formal contexts

  • noticeable

    common opposite in everyday language

  • obvious

    stronger opposite; something easily seen or understood

用法筆記

Often paired with almost (almost imperceptible) or to (imperceptible to the naked eye, imperceptible to someone). More common in written descriptions and formal speech than in everyday conversation.

常見錯誤

❌He made an imperceptible mistake in the report.
✅He made a tiny mistake in the report.
💡Imperceptible describes something too slight for anyone to detect, not merely a small error.