mercurial
Pronunciation
Adjective
C1 Advanced
Quick answer
Changing mood or behavior quickly and unpredictably.
Synonyms and antonyms
Test yourself
Which word fits the gap? "His _____ temper made him difficult to work with."
Answer: mercurial
In your own words, what does "mercurial" mean?
Changing mood or behavior quickly and unpredictably.
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