The supervisor is often abbreviated as "Supv," "Supr,", "Supvr," "S," and "SUP," with "Supv," "Supr,", "Supvr," and "S," being common in technology and telecommunications, and "SUP" in the military. It is crucial to clarify the preferred abbreviation in your industry or workplace and familiarize yourself with company-specific terminology. Asking about these abbreviations when starting a new job will help you fully understand their usage.