flaming (adj.)
intensifying adjective, late 19c., from present participle of flame (v.). Meaning "glaringly homosexual" is homosexual slang, 1970s (along with flamer (n.) "conspicuously homosexual man"); but flamer "glaringly conspicuous person or thing" (1809) and flaming "glaringly conspicuous" (1781) are much earlier in the general sense, both originally with reference to "wenches."