Riche is an adjective written the same in both masculine and feminine, but that may takes a plural mark (des gens riches > rich people) and thus is not considered invariable.
"je suis riche"
riche
elle est riche
Fat noun graisse matière grasse adjective gras gros riche fertile profitable imbécile
First, cheveu is singular and cheveux is pluralHair is invariable in english, hairs does not exist in englishSecond, le cheveu is masculine, it means a piece of hair (from the head), les cheveux means hair
"Riche" in French is a masculine adjective. The feminine form of "riche" is "riche" when used as an adjective.
"je suis riche"
Nouveau riche is French for "new rich".
riche
riche
"Rich" in French is spelled "riche."
rich
ville riche
elle est riche
I translated it into french and found: Il est riche.
A wealthy woman is 'une femme riche' in French.
Nouveau riche