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unstable

/ʌnˈsteɪbl/
un · sta · ble /ʌn · ˈsteɪ · bl/
English Definition
adj. likely to change or fail; not stable
中文释义
不稳定的
Significado en Español
inestable, inconstante
한국어 뜻
불안정한, 변덕스러운
Nghĩa Tiếng Việt
không ổn định, bấp bênh
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Example Sentence

The old bridge felt unstable.

这座旧桥感觉不太稳固。

Synonyms
volatile shaky insecure
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Practice — Synonym (ISEE Verbal)

Choose the best synonym for the word “unstable”:

  1. A stable
  2. B steady
  3. C secure
  4. D volatile
Show answer

D — volatile. “unstable” means adj. likely to change or fail; not stable

Practice — Sentence Completion (ISEE Verbal)

The tall tower of blocks was so ______ that it soon came crashing down.

  1. A steady
  2. B solid
  3. C unstable
  4. D firm
Show answer

C — unstable. “unstable” means adj. likely to change or fail; not stable

More Basic-level ISEE words

carve drop hard message prudence solemn unrelated unselfish unsettling unsuitable untamed untruthful

Common questions about “unstable”

What does “unstable” mean?

unstable — adj. likely to change or fail; not stable. In Chinese: 不稳定的.

How do you pronounce “unstable”?

unstable is pronounced /ʌnˈsteɪbl/. It breaks into 3 syllables: un · sta · ble.

How do you use “unstable” in a sentence?

The old bridge felt unstable. (这座旧桥感觉不太稳固。)

What are synonyms for “unstable”?

volatile, shaky, insecure — all close in meaning to unstable (adj. likely to change or fail; not stable).

Is “unstable” an ISEE Basic-level word?

Yes. unstable appears on the iSEE Vocab Basic list, which covers 2445 words for the ISEE and SSAT.

Progress / 学习进度
2318 / 2445
95% through this level
Mastered: 0 / 2445 (0%)
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