资料来源 : pyDict

填补的;多余的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Expletive \Ex"ple*tive\, a. [L. expletivus, from expletus, p. p.
   of explere to fill up; ex out+plere to fill, akin to plenus
   full: cf. F. expl['e]tif. See {Full}.]
   Filling up; hence, added merely for the purpose of filling
   up; superfluous. ``Expletive imagery.'' --Hallam.

         Expletive phrases to plump his speech.   --Barrow.

Expletive \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.

资料来源 : WordNet®

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