unstable Meaning in the Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of “unstable” in the English Dictionary

"unstable" in British English

See all translations

unstableadjective

uk   us   /ʌnˈsteɪ.bl̩/
not ​solid and ​firm and ​therefore not ​strong, ​safe, or ​likely to last: That ​chairlooks unstable to me. It is a ​poor and ​politically unstable ​society. An unstable ​personsuffers from ​sudden and ​extremechanges in ​theirmental and ​emotionalstate: emotionally unstable
(Definition of unstable from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"unstable" in American English

See all translations

unstableadjective

 us   /ʌnˈsteɪ·bəl/
not ​firm and ​therefore not ​strong, ​safe, or ​likely to last: It is a ​poor and ​politically unstable ​country. An unstable ​personsuffers from ​sudden and ​extremechanges of ​mentalstate: He’s ​emotionally unstable – you never ​know how he’ll ​react.
(Definition of unstable from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of unstable?
Add Cambridge dictionaries to your browser to your website
Word of the Day
public school

in England, an expensive type of private school (= school paid for by parents not by the government)

Word of the Day