1. inferno a very intense and uncontrolled fire
  2. Inferno the abode of Satan and the forces of evil
  3. inference drawing a conclusion on the basis of circumstantial evidence
  4. infer conclude by reasoning
  5. environ extend on all sides of simultaneously; encircle
  6. inferior of or characteristic of low rank or importance
  7. inverse turned backward in order or nature or effect
  8. intern someone who works for an expert to learn a trade
  9. invert turn inside out or upside down
  10. inversion the act of turning inside out
  11. infernal characteristic of or resembling Hell
  12. interne an advanced student or graduate in medicine gaining supervised practical experience (`houseman' is a British term)
  13. innovation the act of starting something for the first time
  14. internee a person who is interned
  15. invariant unvarying in nature
  16. universe everything that exists anywhere
  17. wyvern a fire-breathing dragon used in medieval heraldry
  18. environs the area in which something exists or lives
  19. unwavering marked by firm determination or resolution
  20. wivern a fire-breathing dragon used in medieval heraldry