Meaning

• An attitude or a feeling of distaste or aversion.

• (usually in the plural) Something that a person dislikes (has or feels aversion to).

  "Tell me your likes and dislikes."

• An individual vote showing disapproval of, or lack of support for, something posted on the Internet.

Meaning

• To displease; to offend. (In third-person only.)

• To have a feeling of aversion or antipathy towards; not to like.

• To leave a vote to show disapproval of, or lack of support for, something posted on the Internet.

  "Rebecca Black's "Friday" video has gained notoriety for being one of the most disliked videos in YouTube history."