名詞 rebuff:

1. a deliberate discourteous act (usually as an expression of anger or disapproval)
   同義詞：slight
2. an instance of driving away or warding off
   同義詞：snub, repulse

動詞 rebuff:

1. reject outright and bluntly
   同義詞：snub, repel
2. force or drive back
   同義詞：repel, repulse, fight off, drive back

1. Facts are the most powerful rebuff to rumormongers.
   事實是對造謠者最有力的回答。
2. Her kindness to him was met with a cruel rebuff.
   她一片好心卻遭到他冷酷的拒絕。
3. He rebuffed all my offers of friendship.
   他拒絕了我的一切友好表示。

re.buff

n.（名詞）
A blunt or abrupt repulse or refusal, as to an offer.
斷然拒絕：對某個要求嚴峻或斷然的反應或拒絕
A check or an abrupt setback to progress or action.
挫?。簩δ硞€進程或行動的制止或斷然撤回
v.tr.（及物動詞）
re.buffed,re.buff.ing,re.buffs
To reject bluntly, often disdainfully; snub.See Synonyms at refuse
回絕：斷然地拒絕.常常有蔑視的；冷落參見 refuse
To repel or drive back.
阻止，抵制

來源：
From obsolete French rebuffer [to reject]
源自 已廢法語 rebuffer [拒絕]
from Italian ribuffare
源自 意大利語 ribuffare
from ribuffo [reprimand]
源自 ribuffo [譴責]
ri- [back] from Latin re- * see re-
ri- [后面] 源自 拉丁語 re- *參見 re-
buffo [gust, puff] [of imitative origin]
buffo [微風，吹] [擬聲詞]