noun
genuinely gay person; not pretending to be gay
Internet slang; emphasizes that the person is truly homosexual, not just acting or joking. Often used in online communities to distinguish real orientation from roleplay or humor.
See also: ガチ
あの配信者、ガチホモらしいよ。
That streamer seems to be genuinely gay.
冗談かと思ったけど、彼はガチホモだった。
I thought it was a joke, but he was actually gay.