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mercurial

1 ENTRIES FOUND:
mercurial /mɚˈkjɚrijəl/ adjective
mercurial
/mɚˈkjɚrijəl/
adjective
Britannica Dictionary definition of MERCURIAL
[more mercurial; most mercurial]
: changing moods quickly and often used to describe someone who often changes from being happy to being angry or upset in a quick and unexpected way
: changing often : very changeable