buffly UK /ˈbʌf.lɪ/US /ˈbʌf.li/ adverb1 •(slang) in a buff manner; attractively or muscularly.Jul 18, 2006 Future of Japanese anime and manga looking bright in US San Francisco Chronicle - "yaoi" goes against the grain of traditional rendering of men as buffly masculine. formsmore buffly · most buffly