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).
exâ¢eâ¢dra. n., pl. 1. (in ancient Greece and Rome) a recess in the wall of a courtyard or other open area, as in a palaestra, used for lectures or meetings. 2. a permanent outdoor bench, semicircular in plan and having a high back.