unlike

1. (social media) To cancel a "like" action.Examples: "I unliked the post after I found out the author was racist."; "Facebook, for instance, allows you to register approval for a posted message in a very concrete way, by clicking a thumbs-up like button. Toggling off the button results in unliking your previously liked item. Note that this is different from disliking something, since unliking simply returns you to a neutral state."

2. (social media) To cancel a "like" action.Examples: "My comment was more of a backhanded slap at Stern Pinball's Facebook "presence", specifically the garbage "cheap heat" posts. […] It's so inane (and now, so constant) that I wound up "unliking" stern pinball entirely."broadly

1. (Internet) The act of withdrawing one's like from a post on social media.Examples: "Getting an unlike for every 20 likes is common and not something you need to be losing sleep over."; "On Facebook, users can also hide anyone in their network, including companies, from their News Feed, which is worse than an unlike, as brands cannot measure how many people still like them but have hidden their status updates […]"Internet