In internet slang, “L” is an abbreviation for “loss” or “loser,” used to signify failure, defeat, or a negative outcome. It’s often used informally to describe someone who has made a mistake or is experiencing a setback. For example, “L rizz” combines “L” with “rizz” (charisma) to mean bad charisma. This concise term is frequently used in online conversations and memes to quickly convey a sense of disappointment or a lack of success.