Adjectives

In grammar, an adjective is a 'describing' word; the main syntactic role of which is to qualify a noun or noun phrase, giving more information about the object signified.
Adjectives are one of the traditional eight English parts of speech, though linguists today distinguish adjectives from words such as determiners that were formerly considered to be adjectives. In this paragraph, "traditional" is an adjective, and in the preceding paragraph, "main" and "more" are.

Adjectives describe nouns and pronouns. They give you more information about
people, places, and things.
Kinds of Adjectives

Some adjectives tell about the size of people or things.

Some adjectives tell about the color of things.

Some adjectives tell what people or things are like by describing their

quality.

Some adjectives tell what things are made of. They refer to substances.

 

Some adjectives are made from proper nouns of place. These adjectives are

called adjectives of origin.

The Order of Adjectives

Sometimes several adjectives are used to describe a single noun or pronoun.
When you use two or more adjectives, the usual order is: size, quality, color,
origin, substance. For example:

a small       green         plastic box
size            color           substance

a stylish      red             Italian car
quality        color          origin



Here are more examples.

Adjectives of quality sometimes come before adjectives of size.
For example:

beautiful long hair elegant short hair

But adjectives of size always come before adjectives of color. For example:

beautiful long black hair elegant short red hair

If you use any adjective of substance, it comes after the color adjective.
For example:

a beautiful long black silk dress

taken from, BASIC ENGLISH GRAMMAR for english language grammar learners. Howard Sargeant.

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Reference: wikipedia