slight
SLITEnounMeaning an act that shows disrespect, often by ignoring or leaving someone out
Memory hook made to feel SLIGHT (small). Ivy hands a party invitation to everyone in class except Kai; being left out on purpose makes him feel small. It is a slight.
Leaving Kai off the invitation list was a slight he never forgot.
In context Grandma was hurt by the slight: everyone else at the table was served first, and no one even asked whether she wanted dessert.
Similar snub, insult, rebuff, cold shoulder
Opposite compliment, courtesy, honor