An interjection expressing mild displeasure, contempt, skepticism, or lack of interest (e.g., "hmph", "huh", "hmm").
友達の自慢話に、彼はただ「ふん」とだけ返した。
When his friend bragged, he just replied, "hmph."
ふーん、そうなんだ。知らなかったよ。
Hmm, is that so? I didn't know.
母は息子の言い訳を聞いて、冷たく「ふん」と言った。
Mother heard her son's excuse and coldly said, "hmph."
Prefix (Sino-Japanese) indicating a strong, violent bursting or spouting action; appears in compounds like '噴火' (eruption) or '噴出' (spewing out).
火山が噴火（ふんか）し、溶岩と灰が激しく噴出した。
The volcano erupted, and lava and ash were violently ejected.
パイプから蒸気が噴射（ふんしゃ）し、作業は一時中断された。
Steam blasted from the pipe and work was temporarily halted.
古い井戸から勢いよく水が噴出（ふんしゅつ）した。
Water gushed out forcefully from the old well.