Kj

Initials-based name, often standing for Kenneth Junior

Kj is a modern American nickname-name typically formed by the initials of a first and middle name, or as a diminutive for a 'Junior' (e.g., Kenneth Junior). While it lacks a singular etymological root, it follows the trend of short, punchy initial-based monikers. It is often used informally before being adopted as a standalone given name.