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imperceptible

//ˌɪmpərˈseptəbl//
English Definition
Too slight to be noticed.
中文释义
觉察不到的;极微小的
Example Sentence

The imperceptible shift in ocean temperature can trigger profound changes in marine ecosystems over decades.

海洋温度的细微变化可能在数十年间引发海洋生态系统的深刻改变。

Synonyms
invisible subtle minute
Antonyms
noticeable obvious
💡
Memory Aid / 记忆技巧
im(不) + perceptible(可察觉的) → 察觉不到 → 极细微。
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Practice — Definition Match

Which choice best defines “imperceptible”?

  1. A Severe or plain; strict in manner.
  2. B Vague; ill-defined.
  3. C Too slight to be noticed.
  4. D Comparable; similar.
Show answer

C — Too slight to be noticed.. “imperceptible” means Too slight to be noticed..

Practice — Which Word Fits?

Which word means “Too slight to be noticed.”?

  1. A austere
  2. B imperceptible
  3. C analogous
  4. D nebulous
Show answer

B — imperceptible. “imperceptible” means Too slight to be noticed..

Common questions about “imperceptible”

What does “imperceptible” mean?

imperceptible — Too slight to be noticed.. In Chinese: 觉察不到的;极微小的.

How do you pronounce “imperceptible”?

imperceptible is pronounced //ˌɪmpərˈseptəbl//.

How is “imperceptible” used in a sentence?

The imperceptible shift in ocean temperature can trigger profound changes in marine ecosystems over decades. (海洋温度的细微变化可能在数十年间引发海洋生态系统的深刻改变。)

What are synonyms for “imperceptible”?

invisible, subtle, minute — all close in meaning to imperceptible (Too slight to be noticed.).

What is the opposite of “imperceptible”?

noticeable, obvious — each the opposite of imperceptible (Too slight to be noticed.).

Is “imperceptible” an SAT vocabulary word?

Yes. imperceptible is on the SAT Prep Difficult list — the higher-register words that decide the hard questions. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.

How can I remember “imperceptible”?

im(不) + perceptible(可察觉的) → 察觉不到 → 极细微。

Progress / 学习进度
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The Digital SAT tests vocabulary through Words in Context questions, never as a standalone definition. Learn the word, then use it against a real passage.