HETEROSEXUAL
heterosexual
(adjective) sexually attracted to members of the opposite sex
heterosexual, heterosexual person, straight person, straight
(noun) a person having a sexual orientation to persons of the opposite sex
Source: WordNet® 3.1
Etymology
Adjective
heterosexual (comparative more heterosexual, superlative most heterosexual)
Sexually attracted to members of the opposite sex.
Synonyms
• (sexually attracted to members of the opposite sex): straight, hetero, other-sex
Hyponyms
• heteroflexible
• cishet
Coordinate terms
• heteroromantic
Noun
heterosexual (plural heterosexuals)
A heterosexual person, or other heterosexual organism.
Synonyms
• (heterosexual person): straight (especially in the plural), hetero, breeder (humorous, often offensive)
Antonyms
• homosexual
Source: Wiktionary