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 (comparative more expletive, superlative most expletive) 1  Serving to fill up, merely for effect, otherwise redundant. 2  Marked by expletives (phrase-fillers).
The definitive expletive of the 18th century was bloody, which is still in frequent use in Britain today, and is so common Down Under that it is known as âthe great Australian adjective.â Bloody was not quite an obscenity and not quite an oath, but it was definitely a bad word that shocked and offended the ears of polite society.