volatile adj.
1 that can easily change
VERBS be | become | remain
ADV. dangerously, extremely, highly, very Edwards was a dangerously volatile character. | increasingly | fairly, quite, rather, somewhat | potentially a potentially volatile situation | notoriously | politically
2 that can easily change into a gas
VERBS be | become | remain
ADV. highly, very a highly volatile liquid
You can also check other dicts: volatile (English, 中文解释 ), wordnet sense, Collins Definition