SAT Easy
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infinite

/ˈɪnfɪnət/
English Definition
adj. without limit, endless
中文释义
无限的,无穷的
Example Sentence

The mathematical concept of an infinite set challenges our everyday intuition about quantity and size.

无穷集合的数学概念挑战了我们对数量和尺寸的日常直觉。

Synonyms
boundless limitless unending
Antonyms
finite limited
Seen in practice — from the Digital SAT question bank

- German mathematician Georg Cantor, in the late 19th century, developed a rigorous framework for comparing different sizes of infinite sets.

From a Rhetorical Synthesis question · Expression of Ideas

- Cantor showed that some infinite sets are actually larger than others, a result many contemporaries found deeply counterintuitive.

From a Rhetorical Synthesis question · Expression of Ideas

- The concept of a mathematical proof by contradiction was used by ancient Greek mathematicians, including in Euclid's demonstration that there are infinitely many prime numbers.

From a Rhetorical Synthesis question · Expression of Ideas

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Memory Aid / 记忆技巧
infinite (infinite)
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Practice — Definition Match

Which choice best defines “infinite”?

  1. A Clever and astute; cunning
  2. B Without limit, endless
  3. C Bending or moving easily
  4. D Angry and outraged; resentful
Show answer

B — Without limit, endless. “infinite” means without limit, endless.

Practice — Which Word Fits?

Which word means “without limit, endless”?

  1. A indignant
  2. B shrewd
  3. C infinite
  4. D supple
Show answer

C — infinite. “infinite” means without limit, endless.

Common questions about “infinite”

What does “infinite” mean?

infinite — without limit, endless. In Chinese: 无限的,无穷的.

How do you pronounce “infinite”?

infinite is pronounced /ˈɪnfɪnət/.

How is “infinite” used in a sentence?

The mathematical concept of an infinite set challenges our everyday intuition about quantity and size. (无穷集合的数学概念挑战了我们对数量和尺寸的日常直觉。)

What are synonyms for “infinite”?

boundless, limitless, unending — all close in meaning to infinite (without limit, endless).

What is the opposite of “infinite”?

finite, limited — each the opposite of infinite (without limit, endless).

Is “infinite” an SAT vocabulary word?

Yes. infinite 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 “infinite”?

infinite (infinite)

Progress / 学习进度
35%
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.