A feeling of shame or embarrassment, especially if self-indulgent, unwarranted, exaggerated or felt over a significant period of time.
The prosperous business owner whose infant daughter had a serious genetic disease decided to find a foundation whose annual report was less based on guilt trips. She appreciated that another foundation's annual report had much more emphasis on what they were able to accomplish with the money her family donated.
Remarks intended to produce such a feeling.
He still resented his grandmother laying a guilt trip on him about starving children in China when he didn't finish her home-grown cabbage that he detested.