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- Dictionaryunstable/ʌnˈsteɪbl/
adjective
- 1. likely to give way; not stable: "the unstable cliff tops" Similar Opposite
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Learn the meaning of unstable, an adjective that describes something that is not stable, firm, or constant. See synonyms, examples, word history, and related phrases of unstable.
Unstable means not solid and firm and therefore not strong, safe, or likely to last. It can also describe a person who suffers from sudden and extreme changes of mental state. See synonyms, pronunciation, and translations of unstable.
To be unstable is to lack stability, meaning things could change without warning, like an unstable bookshelf that is likely to fall down. If you are unstable emotionally, you might be ecstatically happy one minute and horribly depressed and angry the next.
adjective. not stable; not firm or firmly fixed; unsteady. liable to fall or sway. Synonyms: precarious. unsteadfast; inconstant; wavering: unstable convictions. Synonyms: vacillating. marked by emotional instability: an unstable person. irregular in movement: an unstable heartbeat.
Learn the meaning of unstable as an adjective in different contexts, such as politics, chemistry, and psychology. Find synonyms, pronunciation, examples, and related words for unstable.
Unstable means lacking stability, fixity, or firmness, or liable to change or fluctuate quickly. Find different meanings, examples, and translations of unstable in various contexts, such as chemistry, physics, and psychology.
Definition of unstable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.