“It would be ungracious of me to hope that bad things happen to you in return, so I'll merely take solace in my knowledge that you have to go through life having a personality like that.”
“She felt uncomfortable in the extravagant ballroom, surrounded by ungracious individuals whose behavior lacked sophistication and refinement.”
“The ungracious host made no effort to acknowledge the guests or express gratitude for their presence.”
ungraceful
(colloquial, nonstandard) Not graceful; lacking grace.