Yes, the term 'untidy clothes' is a correct use of the adjective.
It has been is correct.For he /she/ it or a singular noun subject use has egHe has been to Scotland. The teacher has been to Scotland.For all other subject use have egI have been to Scotland. We have been to Scotland. They have been to Scotland. The teachers have been to Scotland. ( the teachers = a plural subject)
NO! It is actually a noun or a place, most people use "ghetto" as adjective. But that is not the correct was to use it! And ghetto is not a bad word either.
tendering a helping hand is this a correct sentence?
No, addicting is not a real word. Some people use it as addictive, but that is not correct. You do not add -ing to an adjective, you add it to verbs. Addictive is not a proper word to say, so please do not use it.
Yes, the word 'many' is the adjective use, adding to the description of the adjective 'different'. The adjective term 'many different' is used to describe a noun; for example:We have many different varieties of dress shoes.Many different people have tried to make the world a better place.
Noticeably. Correct me if I'm wrong, that's what I thought it was.Noticeably ends with -ly and is an adverb. For the adjective form, you should use noticeable.
Most Behaved is the correct one because it should be in the superlative degree of adjective. Behaved is a verbal adjective. If we use behave it is a verb not an adjective.
people in nevada are dumb
As a noun they are two separate words. As an adjective you will use the hyphen.
That is the correct spelling of the adjective "available" (able to be used or chosen).
Both are used. I would use knit as a verb and knitted as an adjective, but these days you often see knit used as an adjective too.