rebuff (v.) Look up rebuff at Dictionary.com
1586, from obs. Fr. rebuffer "to check, snub," from It. ribuffare "to check, chide, snide," from ribuffo "a snub," from ri- "back" (from L. re-) + buffo "a puff," of imitative origin (cf. buffet (v.)). The noun is first recorded 1611.