expletive

Meanings

1. Serving to fill up, merely for effect, otherwise redundant.
2. Marked by expletives (phrase-fillers).

1. A profane, vulgar term, notably a curse or obscene oath.
2. A word without meaning added to fill a syntactic position.
3. A word that adds to the strength of a phrase without affecting its meaning (such as fuckin in "there's no fuckin way he's gonna get away with it").
4. An obscene or otherwise offensive interjection (such as shit, fuck, or damn it).

Etymology

From Late Latin explētīvus (“serving to fill out”), from Latin explētus, the perfect passive participle of expleō (“fill out”), itself from ex (“out, completely”) + *pleō (“fill”).