|1.||an exclamation or swearword; an oath or a sound expressing an emotional reaction rather than any particular meaning|
|2.||any syllable, word, or phrase conveying no independent meaning, esp one inserted in a line of verse for the sake of the metre|
|3.||expressing no particular meaning, esp when filling out a line of verse|
|[C17: from Late Latin explētīvus for filling out, from explēre, from plēre to fill]|
Any exclamation or oath, especially one that is obscene or profane, as in “Dammit, I forgot to buy the milk.”
Note: The Oval Office tapes of President Richard Nixon, released during the investigation of the Watergate scandal, made famous the phrase “expletive deleted,” which appeared frequently in expurgated transcripts of the tapes.