English-English Dictionary

Meaning of the word unstable in English

What does unstable mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

unstable

US /ʌnˈsteɪ.bəl/
UK /ʌnˈsteɪ.bəl/
"unstable" picture

Adjective

1.

likely to change or give way; not stable

Example:
•
The old bridge is structurally unstable.
•
The political situation in the region remains highly unstable.
Synonym:
unsteadyprecariousshakywobblyvolatile
Synonym:
stablesteadyfirmsecurefixed
2.

prone to erratic or unpredictable changes of mood or behavior

Example:
•
He's been very unstable since the divorce.
•
Her emotions are quite unstable, swinging from joy to sadness quickly.
Synonym:
erraticficklemercurialunpredictablevolatile
Synonym:
calmcomposedsteadybalancedpredictable
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