* Informal speech: This is a general term that encompasses any speech that is not formal or written.
* Spoken language: This term emphasizes the fact that it is spoken, as opposed to written.
* Everyday language: This term highlights the fact that it is used in everyday interactions.
* Colloquial speech: This term emphasizes the use of informal expressions and idioms.
* Vernacular speech: This term refers to the language spoken by a particular group of people in a particular region.
* Casual speech: This term emphasizes the relaxed and informal nature of the speech.
The best term to use depends on the specific situation and the level of formality you want to convey.