Aside: an actor's speech, directed to the audience that is not supposed to be heard by other actors on stage.
Juliet: Or, if thou wilt not, be but sworn my love, and I'll no longer be a Capulet.
Romeo (Aside) : Shall I hear more, or shall I speak at this?
Juliet: 'Tis but thy name that is my enemy. Thou art thyself, though not a Montague…"