Definition

In a way that is changeable or unpredictable, often relating to mood or behavior.

Example

She reacted mercurially to the news, switching from joy to anger in an instant.

Conversation

Have you noticed how she changes her mood so quickly?

Yeah, it's like she acts mercurially depending on the situation.

It's hard to keep up with her sometimes.

I know, one minute she's happy, and the next she’s upset.

Synonyms & Antonyms

Root Explanation

Mercurially → It is derived from "Mercurius" (the Latin name for Mercury, the Roman god of commerce, communication, and eloquence) and the suffix "-ally" (meaning in a manner of). The word "mercurially" means in a manner characteristic of Mercury, often implying quick, changeable, or lively behavior.

Memory Tip

Think of Mercury, the god known for being quick and changeable, to remember that "mercurially" describes a lively or unpredictable manner.

Visually Confused Words