The word "op" is often a shortening of "operation" or "opponent" in various contexts. In gaming, "op" can refer to something that is overpowered or has an unfair advantage. In a medical context, it can refer to a surgical operation. Depending on the context, the exact meaning might vary, but it generally refers to an action, maneuver, or individual in opposition.
The term “op” originated as a slang abbreviation in the late 20th century, becoming popular in various subcultures such as gaming and online communities. It derived from longer words like "operation," "oppose," or "opponent" based on the context of usage.