The antonyms for the word "delivered speech" can be many depending on the context. Some of the opposing words may include, but not limited to, written speech, unsaid, unspoken, silent, mute, mouth shut, not expressed, and unheard. When a speech is written, it is not delivered in the sense of being spoken aloud. Also, sometimes people may want to say something but choose not to, keeping their thoughts unspoken or silent. In contrast, if someone delivers a speech, it means that they have expressed their thoughts and ideas verbally to their audience. In summary, the antonyms for delivered speech can vary depending on the alternatives to communicating one's thoughts and ideas.