“Adjective is a term that describes the characteristic of a noun or pronoun, or refers to the extra specialty of the noun or pronoun, it is called "विशेषण" in Hindi.”
Hindi Adjectives can be divided into two categories - Variable and invariable Adjectives. Variable adjectives are those ending in "aa" आ sound and agree with the noun in number and gender.
For example → मीठा Meethaa
Meethaa Meethee Meethe
↓ ↓ ↓
Masculine Feminine Masculine Plural
Note → In Hindi sentences, Adjectives are placed before the noun.