Yes, the term 'untidy clothes' is a correct use of the adjective.
Untidy is an adjective. You use it in a sentence to describe a noun. For example: My mother told me to clean my untidy room. Muggles thought it was easy to find things in her untidy piles.
Untidy is an adjective, so you'll use it to describe a noun. For example: "Your room is so untidy! Clean it up now!" The park was very untidy, trash was everywhere.
Examples of adjectives that are formed from a noun are:air (noun) - airy (adjective)artist (noun) - artistic (adjective)beauty (noun) - beautiful (adjective)blood (noun) - bloody (adjective)fish (noun) - fishy (adjective)hope (noun) - hopeful (adjective)length (noun) - lengthy (adjective)memory (noun) - memorable (adjective)politics (noun) - political (adjective)thought (noun) - thoughtful (adjective)use (noun) - useful (adjective)water (noun) - watery (adjective)
There is no adjective form for the noun guild.If you want to describe a noun as belonging to or relating to a guild, use the possessive form for the noun, the guild's charter; or use the noun as an adjective, basically forming a compound noun, the guild charter.
The noun slipper does not have an adjective: you would use the noun as a noun adjunct.*The word slippers (slip-on shoes) is not directly related to the adjective slippery.
The abstract noun form of the adjective 'useful' is usefulness.The word 'useful' is the adjective form of the abstract noun use.
Extensive is an adjective, and use is a noun.
The word pigsty is a noun, and is slang for "a very dirty or untidy place."Your room is a pigsty!
You can use it with a noun to modify it or to add to it.
the adjective is captive - the noun is captivity
An adjective describes a noun.
The abstract noun form of the adjective 'useful' is usefulness.The word 'useful' is the adjective form of the abstract noun use.