Webster's Revised Unabridged Dictionary · 1913

Theatrical

Theatrical , adjective

[Latin theatricus, Greek {not transcribed}.]

Of or pertaining to a theater, or to the scenic representations; resembling the manner of dramatic performers; histrionic; hence, artificial; as, theatrical performances; theatrical gestures.
No meretricious aid whatever has been called in -- no trick, no illusion of the eye, nothing theatrical. — R. Jefferies