What is a prefix for Tidy?

There isn't a single, universally accepted prefix for "tidy". However, depending on the context and meaning you want to convey, some options might include:

For emphasizing the action of tidying:

* Re-: (e.g., re-tidy - to tidy again)

* Un-: (e.g., un-tidy - to make something messy)

* Pre-: (e.g., pre-tidy - to tidy beforehand)

* Over-: (e.g., over-tidy - to tidy excessively)

For describing a state of being tidy:

* Neat-: (e.g., neat-tidy - very tidy)

* Spick-and-span-: (e.g., spick-and-span-tidy - perfectly tidy)

* Immaculate-: (e.g., immaculate-tidy - spotless and perfectly tidy)

* Well-: (e.g., well-tidy - neatly tidy)

For emphasizing a specific type of tidying:

* Spot-: (e.g., spot-tidy - to tidy a specific area)

* Quick-: (e.g., quick-tidy - to tidy quickly)

* Deep-: (e.g., deep-tidy - a thorough cleaning and tidying)

Ultimately, the best prefix depends on what you're trying to convey.