noun, na-adjective, noun which may take the genitive case particle 'no'
Used for differences in amount, status, or treatment, often in formal or technical contexts. Can modify nouns directly (不等な/不等の) or stand as a noun.
所得の不等が社会問題になっている。
Income inequality has become a social issue.
両者の間には不等な扱いがあった。
There was unequal treatment between the two parties.
Compound of 不 (fu, 'not') and 等 (tō, 'equal'). The reading is on'yomi, and the word is used primarily in formal or technical writing.