Question

opposite gender of heir

Answer 1

Opposite gender of heir is heiress. Opposite gender means which is opposite in sex like opposite gender of man is woman.

There are four gender in English grammar they are masculine, feminine, common and neuter .

Masculine determines male sex, Feminine determines female sex Common determines either a male or a female sexAnd the last gender, Neuter does determine inanimate things.

Answer 2

Heiress that is only my answer because my  teacher said write that much needed to answer the question