"rebuff" in the noun sense
1. rebuff, slight
a deliberate discourteous act (usually as an expression of anger or disapproval)
2. rebuff, snub, repulse
an instance of driving away or warding off
"rebuff" in the verb sense
1. rebuff, snub, repel
reject outright and bluntly
"She snubbed his proposal"
2. repel, repulse, fight off, rebuff, drive back
force or drive back
"repel the attacker"
"fight off the onslaught"
"rebuff the attack"
Source: WordNet® (An amazing lexical database of English)
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