Definition of Mercurial

prone to sudden or unpredictable changes

Examples of Mercurial in a sentence

Because Mary is taking a new medication, her moods have become quite mercurial and change with the wind.  🔊

While my uncle is as predictable as the sunrise, my aunt is very mercurial.  🔊

As my sister has mercurial moods, we never know how she will be feeling from one moment to the next.  🔊

Eddie’s personality becomes mercurial when he drinks too much.  🔊

Since the truce between the two countries is only temporary, most people consider the situation to be mercurial.  🔊

The trending topics on Twitter are mercurial because they often change within seconds.  🔊

Many sports fans are mercurial and show very little loyalty to their favorite teams.  🔊

Even though my movie tastes are mercurial and vary with my mood, I can always make time for a comedy film.  🔊

Ever since my daughter turned thirteen, she has been displaying a mercurial personality which alters from one minute to another.  🔊

I avoid my mercurial roommate because her sudden mood swings concern me.  🔊

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