The word spurn has a connotation suggesting

From the definition, we can see spurn means to wholly reject someone with full malice and disdain. It is a big insult to be spurned by someone.

Explanation:

We must look at the definition of spurn first,

"To spurn means to reject with disdain. Originally, to spurn was to kick away. Though it's not used in that context so often anymore, being spurned still feels like a kick in the gut. You can reject someone kindly, or let them down easily, but you can't spurn someone with anything but malice."

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