Find Antonyms
isthmus Antonyms
Opposite of isthmus
Pinning down the opposite of isthmus requires matching its exact sense, so the antonyms and opposite words below are paired with a clear noun definition and ranked by contrast strength.
• noun (Context 1)
A relatively narrow strip of land, bordered on both sides by water, that connects two larger landmasses.
Usage Example
"The strait of Panama connects North and South America while separating the Atlantic and Pacific Oceans."
Strongest
strait
Similar words to isthmus
Words similar to isthmus shift depending on context. Common synonyms include:
neck
connection
Cite this Entry
Wordmom. (2026). Antonyms for Isthmus. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/isthmus