plural antitheses
-əˌsiːz 
formal
1
: the exact opposite of something or someone
poverty and its antithesis [=opposite], wealth
—often + ofShe is the antithesis of a politician. [=her character is the opposite of a politician's]
His lifestyle is the antithesis of healthy living.
2
: the state of two things that are directly opposite to each other
—often + of or between
The poem reflects the antithesis of/between good and evil.
Cite this Entry
“Antithesis.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/antithesis. Accessed 16 Apr. 2026.
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