While "messy" is not typically used as a verb, you might find it used informally in some contexts. For example, someone might say:
* "Don't messy up my room!" (meaning "Don't make my room messy")
* "He messied up the whole project." (meaning "He made the project messy")
However, these are not standard grammatical uses and would be considered slang or colloquialisms.
If you want to use a verb related to "messy," you could use:
* Mess up: To make something disordered or untidy.
* Disorder: To make something messy or chaotic.
* Clutter: To fill a space with too many things, making it messy.