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antibiotic Synonyms

Another word for antibiotic

Choosing another word for antibiotic depends on context, so the synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• noun (Context 1)

A medicine, such as penicillin or amoxicillin, that inhibits the growth of or destroys microorganisms, especially bacteria, used to treat or prevent bacterial infections.

Usage Example

"The doctor prescribed a ten-day course of an oral antibacterial to clear up the sinus infection."

Strongest
antibacterial
Strong
antimicrobial
bactericide

• adjective (Context 2)

Relating to, containing, or functioning as a substance that destroys or inhibits the growth of bacteria.

Usage Example

"The veterinarian applied an antibacterial ointment to the dog's paw to prevent infection."

Strongest
antibacterial
Strong
antimicrobial
bactericidal
antiseptic

Opposites of antibiotic

The opposite of antibiotic shifts depending on context. Common opposites include:

probiotic
See all opposites of antibiotic

• Nearby Words

antiauthority
antibacterial
antibias
antibiotic
antiblack
antibody
antibusiness

Cite this Entry

Wordmom. (2026). Synonyms for Antibiotic. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/antibiotic
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