Interjection (kandoushi)
hmm; well ...; humph; huh; pshaw; pish
「じつは自由研究で相談したいことがあって・・・」「どれ・・・。ふーん、被子植物について調べてるのね」"Well, there's something I'd like your advice on about my research project ..." "Let's see... Hmm, you're investigating flowering plants then." Prefix
roughly; harshly; violently
Also written ふーん、ふうん、フン、フーン