General synonyms:
* Soliloquy: This is the most common synonym and often used interchangeably. It refers to a speech delivered by a single character, usually alone on stage, expressing their thoughts and feelings.
* Speech: This is a broader term that encompasses any extended spoken address, including monologues.
* Harangue: This implies a lengthy, passionate, and often aggressive speech, often aimed at persuasion or criticism.
* Rant: Similar to harangue, but often less structured and more emotionally charged.
* Tirade: A long, angry, or bitter speech, often directed at someone or something.
* Lecture: A formal, informative talk on a specific topic.
More specific synonyms:
* Confession: A monologue where the speaker reveals personal secrets or guilt.
* Rhapsody: A passionate and eloquent speech expressing great enthusiasm or admiration.
* Diatribe: A bitter and abusive speech criticizing someone or something.
* Sermon: A religious speech, especially one delivered by a priest or minister.
The best synonym to use depends on the specific context and the tone of the monologue.