resentment, grudge
Ahora que me posees un poco me guardas rencor.
Now that you possess me a little, you hold a grudge against me.
— Retrato de una mujer en llamas (2019)
Me alegra que ya no le guardes rencor.
I'm glad you don't hold a grudge against him anymore.
— Dolor y gloria (2019)
Si añades tu rencor, puedes echarlo todo a perder.
If you add your resentment, you can ruin everything.
— Tigre y dragón (2000)
Tom no es de los que guardan rencor.
Tom is not one to hold grudges.