"Opp" on TikTok is slang for opposition. It refers to an enemy, rival, or someone you are against.
In the context of TikTok, "opp" is often used in a joking or confrontational manner, similar to how it's used in hip-hop culture. Users might refer to rival groups, or even just individuals they have a disagreement with, as their "opps." It's a shortened version of the word opposition, making it quick and easy to use in captions, comments, and videos. The use can range from lighthearted banter to more serious displays of rivalry.
