bitter, rankling resentment or ill will; hatred; malice.
Also, especially British,ran·cour.
Origin: 1175–1225;Middle Englishrancour < Middle French < Late Latinrancōr- (stem of rancor) rancidity, equivalent to Latinranc(ēre) (see rancid) + -ōr--or1
Related forms
ran·cored; especially British,ran·coured, adjective
un·ran·cored, adjective
Synonyms bitterness, spite, venom, animosity. See malevolence.