flamboyance; exaggerated talk; hot air
Refers to boastful, exaggerated, or flamboyant speech; often used in the phrase 怪気炎を上げる (to talk big, to spout hot air).
彼はいつも怪気炎を上げている。
He's always spouting hot air.
あの政治家の怪気炎にはうんざりだ。
I'm fed up with that politician's exaggerated talk.
Standard kanji form.
Rarely used variant with 焔 instead of 炎.
Irregular kanji usage; 快 is not standard for this word.
Compound of 怪 (strange, suspicious) + 気炎 (spirit, fervor). The exact origin is uncertain, but it likely arose as a vivid expression for overblown rhetoric.