Is fancy an adjective?
The word fancy, meaning "decorative", is an adjective.
The word 'fancy' is an adjective (fancy, fancier, fanciest), a word that describes a noun; for example a fancy hat or a fancy party. The word 'fancy' is also a noun (fancy, fancies), a word for a whim or a fantasy; and a verb (fancy, fancies, fancying, fancied), to visualize or imagine, and to like.
Traditionally, the adjective "fancy" means elaborate, or designed to impress. The modern definition of fancy still means the same, but is used to describe something luxurious, expensive, or highly desired. Traditionally the verb "fancy" means to feel a desire for. The modern definition still means the same thing, and can also mean to have a crush on someone or to really want something.
Adjectives are words that describe people, places or things (nouns). Examples: Mrs. Quinn is a generous woman who gives much of her time and money to help those in need. Here, the adjective "generous" describes Mrs. Quinn, a person. The north pole is a frigid place. Here, the adjective "frigid" meaning very cold, describes the north pole. That fancy dress makes you look like a princess. "Fancy" is an adjective describing a dress.
Technically, an adjective is a word that describes something. So an "adjective for hair" would be a word that describes hair-dark, brown, shiny, stringy, short, stylish... There are countless possibilities. Perhaps you meant, "What is an adjective that means 'hairy'?" The best one I can think of is "hirsute", though it's rather fancy and was used more commonly back when people actually cared about language.
The word 'everyday' is an adjective, a word used to describe a noun. Example: It's not a fancy party, you can wear everyday clothes. (describes the noun 'clothes') The adjective 'everyday' should not be confused with the noun phrase 'every day' (the noun 'day' described by the adjective 'every'). The noun phrase often functions as an adverb. Example: We have lunch together every day. (modifies the verb 'have')
The rarest diamond colour is the naturally occurring red colour. All naturally coloured diamonds have a further grade designation on this scale: Faint Very Light Light Fancy Light Fancy Fancy Dark Fancy Intense Fancy Deep Fancy Vivid The Fancy Vivid colour designation is the most expensive grade. Read more, below.
Blue diamonds are called fancy colored diamonds, and there are several names for the shades of blue, including, from Wikipedia: "Faint, Very Light, Light, Fancy Light, Fancy, Fancy Dark, Fancy Intense, Fancy Deep, Fancy Vivid." Also from Wikipedia, there are 27 different names for colour hues that include bluish colors. You can read more, below.
In the spectrum of blue diamond colour, there are several options, including " . . . Faint, Very Light, Light, Fancy Light, Fancy, Fancy Dark, Fancy Intense, Fancy Deep, Fancy Vivid." These are the intensity of saturation of blue colour descriptions used by the Gemological Institute of America (GIA).