Autoclaving is a process of sterilizing equipment, medical instruments, and materials using a high-temperature pressurized steam environment. The word "autoclaving" is typically associated with sterilization, so its antonyms can be words with the opposite meaning, such as contaminating, infecting, or Envenoming. These antonyms convey the idea of introducing impurities or harmful substances rather than eliminating them. Another possible antonym for "autoclaving" could be "unclean," a word that denotes the opposite of being sterilized or disinfected. Furthermore, "unclean" could imply germ-ridden, unsanitary, filthy, or squalid, indicating the lack of proper disinfection processes.