The correct spelling of the phrase "staid together" is actually "stayed together." The pronunciation of "staid" and "stayed" are very similar, which may lead to confusion in spelling. "Staid" is pronounced "steyd" (/steɪd/), while "stayed" is pronounced "stayd" (/steɪd/). The latter refers to the act of remaining in a particular place or situation, while the former means to be sedate, serious, or restrained in character or behavior. So, it is important to ensure the correct spelling and meaning are used in written communication.
The phrase "staid together" is not a commonly used expression or a standalone term with a specific etymology. However, if you meant to ask about the term "stayed together", the etymology can be traced back to the individual words that constitute it:
1. Stay: The verb "stay" originated from the Middle English word "staien" which was derived from the Old French word "ester" and before that, from the Latin word "stare" meaning "to stand".
2. Together: The word "together" has an Old English origin and comes from the combination of "to" (indicating "intact") and "gædere" meaning "together".
When these words are combined, "stayed together" implies remaining in a unified state, oftentimes used to describe the cohesion or relationship between two or more individuals or entities.