- an utterance or discourse spoken to oneself, without regard for whether any other hearers are present (often used as a device in drama to disclose a character's innermost thoughts): Hamlet's soliloquy begins with “To be or not to be.”
- the act of talking while or as if alone.
- the act of speaking alone or to oneself, esp as a theatrical device
- a speech in a play that is spoken in soliloquy