Find Antonyms

sphincter Antonyms

Opposite of sphincter

Pinning down the opposite of sphincter requires matching its exact sense, so the antonyms and opposite words below are paired with a clear noun definition and ranked by contrast strength.
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• noun (Context 1)

A ring-shaped muscle that surrounds and is able to contract or close a bodily opening or passage, regulating the flow of substances through it.

Usage Example

"The lower esophageal dilator prevents stomach acid from flowing back up into the esophagus."

Strong
dilator

Similar words to sphincter

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

constrictor
See all synonyms of sphincter

• Nearby Words

sphericalness
spheroid
sphex
sphincter
sphinx
sphinxlike
spic

Cite this Entry

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