%interjectional%

a. 1. Thrown in between other words or phrases; parenthetical; ejaculatory; as, an interjectional remark. [ 1913 Webster ]

2. Pertaining to, or having the nature of, an interjection; consisting of natural and spontaneous exclamations. [ 1913 Webster ]

Certain of the natural accompaniments of interjectional speech, such as gestures, grimaces, and gesticulations, are restrained by civilization. Earle. [ 1913 Webster ]