ex·ple·tive /ˈɛksplətɪv/
 (a.)填補的;多餘的


 Ex·ple·tive a.  Filling up; hence, added merely for the purpose of filling up; superfluous. “Expletive imagery.”
    Expletive phrases to plump his speech.   --Barrow.


 Ex·ple·tive, n. 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.

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 expletive
      n 1: profane or obscene expression usually of surprise or anger;
           "expletives were deleted" [syn: curse, curse word, oath,
            swearing, swearword, cuss]
      2: a word or phrase conveying no independent meaning but added
         to fill out a sentence or metrical line