- 1(often disapproving) (of a person or their moods) changing easily from one mood to another a highly volatile personality
- 2(of a situation) likely to change suddenly; easily becoming dangerous synonym unstable a highly volatile situation from which riots might develop a volatile exchange rate
- 3(technology) (of a substance) that changes easily into a gas Gas is a volatile substance.
NAmE//ˌvɑləˈtɪlət̮i//
noun [uncountable]See volatile in the Oxford Advanced Learner's DictionaryCheck pronunciation: volatile