Definition of rebuff
transitive verb
: to reject or criticize sharply : snub
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re•buff rĭ-bŭf′►
n.
A blunt or abrupt repulse or refusal, as to an offer.
n.
A check or an abrupt setback to progress or action.
transitive verb
To reject bluntly, often disdainfully; snub: synonym: refuse.