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volatile

/ˈvɒlətaɪl/  ·  say it: VOL·uh·til

liable to change rapidly

In Describing & Comparing

In more detail

1. (adjective) likely to change suddenly and unexpectedly

2. (adjective) tending to become angry or violent easily

3. (adjective) (of a liquid or substance) turning into vapor easily, especially at room temperature

Examples

• 1. The stock market is very volatile right now, with prices going up and down constantly.
• 2. He has a volatile personality and can lose his temper quickly.
• 3. Gasoline is a volatile liquid that evaporates rapidly.

Nearby in Describing & Comparing

uniform, erratic, consistent, stable, fluctuating, static