offscreen means existing or happening outside the frame of the cinema or television screen.
Etymology
From off + screen.
adj
- Existing or happening outside the frame of the cinema or television screen“In addition to racking up what looks like a substantial offscreen body count, the movie at one point offers an eight-second introduction for a sleazy used-car salesman character for the sole purpose of justifying Tripp and Creech laying waste to his inventory.”
adv
- Outside the frame of the cinema or television screen
verb
- To kill a character offscreen.“Yeah, I also hate her. I hope she gets offscreened in the third act low-key.”