Inferno/ɪnˈfɜːrnəʊ/ Definition 1 of 3Pro Tip 1/3Intensity Indicated Use 'inferno' to emphasize the uncontrollable power and vastness of a fire. The warehouse became an inferno within minutes. Pro Tip 2/3Used Literally 'Inferno' is often used to describe actual fires, less commonly for small or controlled ones. Firefighters battled the inferno throughout the night. Pro Tip 3/3High Impact The word 'inferno' conveys urgency and danger, suitable for high-stakes situations. Escape routes were blocked by the raging inferno.