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invaluable

/ɪnˈvæljuəbl/
English Definition
adj. priceless; extremely valuable; essential
中文释义
无价的；非常宝贵的
Example Sentence

The handwritten field notes from the 1920s expedition proved invaluable for reconstructing the region's original ecosystem.

20世纪20年代探险队的手写实地笔记，对于重建该地区原始生态系统来说，具有无可估量的价值。

Synonyms
priceless precious indispensable
Antonyms
worthless valueless
💡
Memory Aid / 记忆技巧
in- (unable) + valuable (evaluate, valuable) → invaluable, extremely precious.
Know this word? Mark it mastered, or move on.
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Practice — Definition Match

Which choice best defines “invaluable”?

  1. A Based on personal feelings or opinions
  2. B Not able to exist or work with another person or thing because of basic differences
  3. C Priceless; extremely valuable; essential
  4. D Bright, clear
Show answer

C — Priceless; extremely valuable; essential. “invaluable” means priceless; extremely valuable; essential.

Practice — Which Word Fits?

Which word means “priceless; extremely valuable; essential”?

  1. A vivid
  2. B invaluable
  3. C subjective
  4. D incompatible
Show answer

B — invaluable. “invaluable” means priceless; extremely valuable; essential.

More Easy-level SAT words

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Common questions about “invaluable”

What does “invaluable” mean?

invaluable — priceless; extremely valuable; essential. In Chinese: 无价的；非常宝贵的.

How do you pronounce “invaluable”?

invaluable is pronounced /ɪnˈvæljuəbl/.

How is “invaluable” used in a sentence?

The handwritten field notes from the 1920s expedition proved invaluable for reconstructing the region's original ecosystem. (20世纪20年代探险队的手写实地笔记，对于重建该地区原始生态系统来说，具有无可估量的价值。)

What are synonyms for “invaluable”?

priceless, precious, indispensable — all close in meaning to invaluable (priceless; extremely valuable; essential).

What is the opposite of “invaluable”?

worthless, valueless — each the opposite of invaluable (priceless; extremely valuable; essential).

Is “invaluable” an SAT vocabulary word?

Yes. invaluable is on the SAT Prep Easy list — mid-frequency academic words that do get tested. 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 “invaluable”?

in- (unable) + valuable (evaluate, valuable) → invaluable, extremely precious.

Progress / 学习进度
38%
through SAT Easy
This level: 0 mastered (0% of the level)
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.
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