the.com/untidiness

means The state of being disorganized or messy, especially in a way that lacks visible order to anyone else.

from Built from 'tidy,' which first meant 'timely' or 'in season' — from Middle English 'tidy,' rooted in 'tide,' meaning time. Something tidy was originally something well-timed or seasonable; the sense drifted to mean 'neat, orderly' by the 1700s, since being in good order was linked to being properly timed. Add the negating 'un-' and the noun-forming '-ness,' and you get the state of being untimely in the oldest sense — and chaotic in the modern one.