Definitions

1. adjective

the most untidy or disorderly; most chaotic

“Her room was the messiest in the entire house.”

2. superlative

most untidy or disorderly; most chaotic

“This is the messiest project I’ve ever worked on.”

3. comparative

more untidy or disorderly; more chaotic

“The messiest part of the city is the old quarter.”

4. noun

the state or quality of being untidy or disorderly

“The messiest of the bunch was a sad sight to behold.”