Find Antonyms
convex Antonyms
Opposite of convex
Because the opposite of convex shifts with each meaning, the 14 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
• adjective (Context 1)
Having an outline or surface that curves or bulges outward, resembling the exterior of a sphere or circle.
Usage Example
"The security camera was mounted behind a concave dome of tinted glass to give it a wider field of view."
Strongest
concave
Strong
sunken
hollow
recessed
depressed
indented
Weak
flat
plane
• adjective (Context 2)
Denoting a geometric figure or set in which a line segment connecting any two interior points lies entirely within the boundary of the figure.
Usage Example
"A regular hexagon is considered a concave polygon because none of its internal angles exceed 180 degrees."
Strongest
concave
nonconvex
Strong
reentrant
• noun (Context 3)
A surface or part that curves outward, such as a lens or an architectural feature.
Usage Example
"The architect incorporated alternating convexes and concaves into the wall's design to create a dynamic, wavy texture."
Strongest
concave
concavity
Strong
hollow
depression
recess
Weak
indentation
Similar words to convex
Words similar to convex shift depending on context. Common synonyms include:
convexity
bulging
domed
bulge
rounded
gibbous
protuberant
swell
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Convex. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/convex