What is another word for mercurial?
Pronunciation: [mɜːkjˈʊɹɪəl] (IPA) 
When looking for synonyms of the word "mercurial," it's important to consider the various meanings of the term. Typically, the word is used to describe someone or something that is volatile, changeable, or unpredictable. Therefore, related terms might include erratic, capricious, fickle, flighty, whimsical, or volatile. However, it's also possible to use "mercurial" in a more positive sense, such as to describe someone who is lively, lively, or enthusiastic, in which case synonyms might include vivacious, exuberant, effervescent, buoyant, or high-spirited. Ultimately, the choice of synonym will depend on the specific context in which the word is being used.
