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Contradictory; achieving antithesis; containing opposites. Honestly, a word that people only use when they want to seem smart.
It rained all night the day I left, the weather it was dry,
the sun so hot, I froze to death

(Oh Susanna!)

Wow, that song is antithetical.
by Emwy June 19, 2017
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Opposed to an idea.
Hey you are wearing a leather jacket! Isn't that antithetical to being a vegan?
by Vegfemnat August 24, 2017
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