Serving to fill up; added to fill a vacancy, or for factitious emphasis: specifically used of words. See II., 2.n. Something used to fill up; something not necessary but used for embellishment.n. In rhetoric and grammar, a word or syllable which is not necessary to the sense or construction, or to an adequate description of a thing, but which is added for rhetorical, rhythmical, or metrical reasons, or which, being once necessary or significant, has lost notional force.n. Hence, by euphemism, an oath; an exclamatory imprecation: as, his conversation was garnished with expletives.