Unwashed is a related term of untidy.
As adjectives the difference between unwashed and untidy
is that unwashed
is that has or have not been washed while untidy
That has or have not been washed.
vulgar, plebeian, unsophisticated
- the great unwashed = the common people
* unwashed masses
The Mirror and the Lamp
, passage=There were many wooden chairs for the bulk of his visitors, and two wicker armchairs with red cloth cushions for superior people. From the packing-cases had emerged some Indian clubs, […], and all these articles […] made a scattered and untidy
decoration that Mrs. Clough assiduously dusted and greatly cherished.}}