Definitions

instability

[in-stuh-bil-i-tee] / ˌɪn stəˈbɪl ɪ ti /

NOUN

imbalance, inconstancy

Synonyms

STRONGEST

anxiety fluctuation insecurity uncertainty volatility vulnerability weakness

STRONG

alternation capriciousness changeability changeableness disequilibrium disquiet fickleness fitfulness flightiness fluidity frailty hesitation immaturity impermanence inconsistency inquietude irregularity irresolution mutability oscillation pliancy precariousness restlessness shakiness transience unpredictability unreliability unsteadiness vacillation variability wavering

WEAK

unfixedness

Antonyms

STRONG

calm

WEAK

balance constancy soundness stability steadfastness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Kashkari cited distrust of Iran and Middle East instability as reasons for his cautious outlook.

From Barron's • Jun. 26, 2026

But as Fed chairman, he molded the central bank as a bulwark against instability.

From The Wall Street Journal • Jun. 22, 2026

These symptoms resemble those seen in certain human disorders linked to genome instability that affect the cerebellum.

From Science Daily • Jun. 21, 2026

A spokesman for the first minister appeared to blame "instability in Westminster".

From BBC • Jun. 18, 2026

Though the sea itself was a danger to him in the hard weather of the season, that danger and change and instability seemed to him a defense and chance.

From "A Wizard of Earthsea" by Ursula K. Le Guin

Vocabulary lists containing instability

Southeast Asia - Middle School

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Southeast Asia - High School

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Second Democratic Debate 20 words

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!