Definition of volatile for English Language Learners. : 1  likely to change in a very sudden or extreme way. : 2  having or showing extreme or sudden changes of emotion. : 3  likely to become dangerous or out of control.
expletive (plural expletives) 1  A profane, vulgar term, notably a curse or obscene oath. ( 2 linguistics) A word without meaning added to fill a syntactic position. ( 3 linguistics) A word that adds to the strength of a phrase without affecting its meaning; an intensifier.
2. to dispossess (a person) of ownership. 3. to take from another and use as one's own: expropriated ideas. expropriÄtus, past participle of expropriÄre to deprive of property = Latin ex-ex - 1 + Medieval Latin propriÄre to appropriate]. exâ¢proâ²priâ¢aâ¢ble (-É bÉl) adj.