Bible Dictionaries
Expletive

Webster's Dictionary

(1):

(a.) Filling up; hence, added merely for the purpose of filling up; superfluous.

(2):

(n.) A word, letter, or syllable not necessary to the sense, but inserted to fill a vacancy; an oath.

Bibliography Information
Webster, Noah. Entry for 'Expletive'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​e/expletive.html. 1828.