Facebook Grudge
A deep hatred for someone who didn’t comment on your post, even though you commented on theirs. It’s like they’re being rude on purpose.
You posted a picture of your dinner and they didn’t comment. You commented on theirs. That’s not fair.
They posted about their vacation and you replied, but they didn’t reply to your post about your cat.
You liked their post, but they didn’t like yours. That’s a grudge.