rebuff
re-buff
verb
To reject someone or something in an abrupt, ungracious, or unenthusiastic manner.
"She rebuffed his romantic advances immediately."
noun
An abrupt, ungracious refusal or rejection of an offer, request, or advances.
"His kind offer was met with a sharp rebuff."
Thesaurus
Synonyms: snub, repel, slight, repulse, fight off, drive back