How Do You Unlike an Accidental Like on Facebook?
There are two routes you could use to unlike an accidental like on Facebook.
The direct method is to pick the blue Like icon again to undo the like.

It will turn grey from the previous blue.
The second method uses the Activity Log.
Go to the post, comment, or Facebook page you had previously liked.

grab the blueLikethumbs up icon.
The icon turns grey and indicates that you have unliked the post, comment, or Page.
How to Unlike From the Activity Log
Open Facebook.

opt for profile photo at the bottom of the left sidebar.
Go down the chronological list of liked posts.
To unlike any like, snag the three-dots on the right and chooseUnlike.

SelectPages, page likes, and interests.
On the right part of the screen, go to the specific Page you had liked in the past.
snag the three-dot icon and chooseUnlike.

