Mislike

[Sarah]

To dislike; to disapprove of; to have aversion to; as, tomislike a man.Who may like or mislike what he says. I. Taylor.

[Sarah]

Accidentally clicking 'like' on something on facebook such as a status in the news feed. The primary cause for mislikes are touchscreen devices such as the iPod Touch. This occurrence can range in seriousness depending on the nature of the item and / or the person who posted it.

[Sarah]

A negative word which (in the Patterson scale of harshness) is somewhere in between [hate] and [dislike] .
Can be used in pretty much any situation .
Use of word will probably result in people's opinion of you going down due to misinterpretation of newest verbal fad for terribly poor grasp of the English language