expression, noun
homosexuality; interest in the same sex
Colloquial euphemism for homosexuality or same-sex attraction. Often used in casual conversation to indirectly refer to someone's sexual orientation.
彼はその気があるらしい。
He seems to be interested in the same sex.
その気のある人たちが集まるバー。
A bar where people with same-sex interests gather.
From その (that) + 気 (feeling, inclination), literally 'that inclination'. The specific meaning of homosexuality developed as a euphemistic expression.