rebuff n. + Add to list US //ɹiˈbəf// UK //ɹɪbˈʌf// re·buff SynonymsEtymology Synonyms 'slightrepelrepulsesnubEtymology 1ITAribuffare→FRMrebuffer→FRArebuffer→ENrebuff From obsolete French rebuffer, from Middle French rebuffer (compare French rebiffer (“to rise up, revolt”)), from Italian ribuffare.Etymology 2 From re- + buff.