REBUFF (verb)

Rebuff
Verb

Etymology: adaptation from a French word, rebuffer, which is now obsolete. The French rebuffer is an adaptation from Italian ribuffare (= to hit), which is also obsolete. This Italian ribuffare is analysable into ri- (= back), instead of Latin re-, and buffo (= a puff)
Third-person singular simple present: she/he rebuffs
Indicative past, past participle: rebuffed
Present participle: rebuffing.
Transitively:
First definition: to react with a rebuff against (some one = direct object); this is, to signify ungraciously to (some one) one’s reluctance either to accept his (her) offering, or to grant what he (she) demands, or to reply what he (she) asks, or to correspond with courtesy (love, pleasure, etc.)
It may be approximately translated by rechazar (a una persona), in Spanish; respingere (qualcuno), in Italian; repousser (quelqu’un), in French.
Synonyms: to snub, reject, refuse
Antonyms: to favour, indulge, gratify
Left on the porch, he was now directed to approach a distinguished looking old gentleman, probably a banker and a power in Wall Street, who read his morning papers. Timidly he stood before this person, thrusting forward his basket. The old gentleman glanced up in annoyance and brutally rebuffed the country boy with an angry flourish of the paper he read. Harry Leon Wilson (Merton of the Movies)

[…] he evinced himself such a decided aversion to speak of the circumstances of his past life, that he sometimes rebuffed even his visitors when they enquired about events which took place during the time he resided in Palermo. John Galt (The earthquake)

The cat, who is rebuffed by her master, does not seem to think that the rebuff ought to be received like a caress from the hands of him who bestows it. George Cruikshank (The gentleman’s pocket magazine, vol. 3)

One of the English, endeavouring to shew a marked attention to a female, was rebuffed in a manner that prevented any farther attempts. William Fordyce Mavor (historical account of the most celebrated voyages…)

One resident used an allegory to relate her […] depression. She described a woman walking alone through desolate streets, searching but lost, rebuffed by several men when she asked directions. Patricia L. Munhall (In women’s experience, vol. 1)

Foster liked to talk to strangers and as the girl had not rebuffed him, he took her cloak, which looked very wet, from the rack. Harold Bindloss (Carmen's Messenger)

Second definition: to react with a rebuff against (something offered or asked); this is, to signify ungraciously one’s reluctance either to accept (an offering = direct object), or to grant (something = direct object), or to reply (what is asked = direct object), or to correspond with (courtesy love, pleasure, etc. = direct object)

It may be approximately translated by rehusar, in Spanish; rifiutare, in Italian; refuser, in French.
Antonyms: to grant, accept, concede

While she was speaking, her uncle, my old friend Zerobabel L. Hoskins, came most unexpectedly to see us. I have told the courteous reader how coldly and bluntly he had rebuffed my application for the small loan ; I need hardly say he was in consequence one whom I was not likely soon to have solicited again. John Galt (Lawrie Todd)

[…] attempts by young to suck from an alien mother may be rebuffed. Peter G. Hepper (Kin recognition)

As soon as she was sitting upright, she began to sob. But she would not speak and she mutely rebuffed my clumsy efforts to comfort her. Grant Jarrett (More Towels)

It was a flushed and sparkling Winona who later fluttered down the dull old stairs of the respectable Penniman home at the call of the waiting Wilbur Cowan. Her dark hair was still plainly, though rather effectively, drawn about her small head—she had definitely rebuffed the suggestion of her mother that it be marcelled—but her wisp of a frock of bronze gossamer was revolutionary in the extreme. Harry Leon Wilson (The Wrong Twin)

I can with difficulty be polite to him, yet his officious attentions are not to be rebuffed. The Living age, vol. 32

She said that she had been without eating for two days, and whenever she dared ask for charity, she was rebuffed by unkind words. The Rover, vol. 2, edited by Seba Smith

Third definition: to drive back

Postdefinition: it is very rarely used.

A man without energy is a helpless character […]; like a cork in an eddy, he is rebuffed here and jostled there, and goes on travelling in a circle to the end of the chapter. Not so the man of action; no jostling thwarts him, no rebuffs retard him. Adrien Paul (Willis the pilot)

A ruby-throated hummingbird, rebuffed by the wind, fell on the cold cement foundation of the house and clung there for a long miserable minute. Louise de Kiriline (The Lovely and the Wild)

Other English vocables derived from rebuff: rebuff (noun), rebuffed, rebuffing, rebuffal, rebuffer