Final answer:
The term for an actor moving because another actor has moved to block them is 'adjusting.' Blocking is the planned positioning and movement on stage, and actors must adjust their positions to maintain proper staging.
Step-by-step explanation:
To move because another actor has moved to block you can be described by the term adjusting. In the context of performing arts, particularly theater, blocking refers to the planned movement and positions of the actors on stage during a performance. These movements and positions are dependent on the script, the stage configuration, and the artistic choices made by the actors and the director. When another actor moves into a space that necessitates a change in position, an actor must adjust, shift, maneuver, or re-position to maintain the correct staging and sightlines for the audience.
During rehearsals, the director blocks the show, creating stage pictures and managing transitions. If an actor's movement is dictated by a character's needs—for instance, entering a room and sitting on a sofa—the actor, director, and stage manager will work together to ensure that the action flows smoothly, even when obstacles like other actors come into play. This is a critical part of the rehearsal process and helps to create a fluid and realistic portrayal of the story being told on stage.