In`ter*jec"tion*al (?), a.
Thrown in between other words or phrases; parenthetical; ejaculatory; as, an interjectional remark.
Pertaining to, or having the nature of, an interjection; consisting of natural and spontaneous exclamations.
Certain of the natural accompaniments of interjectional speech, such as gestures, grimaces, and gesticulations, are restrained by civilization.
© Webster 1913.