EXPLETIVE
curse, curse word, expletive, oath, swearing, swearword, cuss
(noun) profane or obscene expression usually of surprise or anger; “expletives were deleted”
expletive
(noun) a word or phrase conveying no independent meaning but added to fill out a sentence or metrical line
Source: WordNet® 3.1
Etymology
Adjective
expletive (comparative more expletive, superlative most expletive)
Serving to fill up, merely for effect, otherwise redundant.
Synonym: expletory
Marked by expletives (phrase-fillers).
Noun
expletive (plural expletives)
A profane, vulgar term, notably a curse or obscene oath.
Synonyms: swear word, oath
(linguistics) A word without meaning added to fill a syntactic position.
(linguistics) A word that adds to the strength of a phrase without affecting its meaning.
Synonym: intensifier
Source: Wiktionary
Ex"ple*tive, a. Etym: [L. expletivus, from expletus, p.p. of explere
to fill up; ex out+plere to fill, akin to plenus full: cf. F.
explétif. See Full.]
Definition: Filling up; hence, added merely for the purpose of filling up;
superfluous. "Expletive imagery." Hallam.
Expletive phrases to plump his speech. Barrow.
Ex"ple*tive, n.
Definition: A word, letter, or syllable not necessary to the sense, but
inserted to fill a vacancy; an oath.
While explectives their feeble aid to join, And ten low words oft
creep in one dull line. Pope.
Source: Webster’s Unabridged Dictionary 1913 Edition