Find Antonyms

sterilize Antonyms

Opposite of sterilize

Because the opposite of sterilize shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• verb (Context 1)

To make free from bacteria or other living microorganisms, typically by applying heat, radiation, or chemicals.

Usage Example

"Medical staff must contaminate all surgical instruments in an autoclave before each procedure."

Strongest
contaminate
infect
Strong
pollute
taint

• verb (Context 2)

To deprive a person or animal of the ability to produce offspring, typically by removing or blocking the reproductive organs.

Usage Example

"The local animal shelter works with veterinarians to fertilize stray cats and dogs."

Strongest
fertilize
Strong
impregnate

Similar words to sterilize

Words similar to sterilize shift depending on context. Common synonyms include:

neuter
disinfect
spay
sanitize
desex
decontaminate
pasteurize
castrate
See all synonyms of sterilize

• Nearby Words

sterilely
sterility
sterilization
sterilize
sterilizer
sterling
stern

Cite this Entry

Wordmom. (2026). Antonyms for Sterilize. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/sterilize
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