What is an aside in theatrical terms?

An aside in theatrical terms is a technique used to provide insight into a character's thoughts or feelings without the other characters on stage hearing it. It serves as a way for the audience to gain a deeper understanding of the plot or the character's motivations. When a character speaks an aside, they momentarily step out of the main dialogue to share personal reflections or commentary. This theatrical device allows the audience to engage more intimately with a character's internal struggles or intentions, creating a bridge between the character and the audience that enhances the overall experience of the play.

The other options do not accurately define an aside: a speech directed to other characters would not be an aside since it is meant to be heard by them; an emotional outburst by a character does not carry the same private connotation as an aside; and the main theme of the play is a broader concept that encompasses all aspects of the narrative rather than a specific individual dialogue moment.