Antithetical

adjective
/ˌæntɪˈθɛtɪkəl/
Directly and unequivocally opposed; constituting or marked by direct contrast, such that two things are mutually incompatible in nature or principle.

✍️ Usage in a UPSC answer

A surveillance architecture that monitors citizens without statutory safeguards or judicial oversight is antithetical to the constitutional vision of a liberal democracy, in which the dignity and privacy of the individual are not concessions of the state but inviolable guarantees against it.

Synonyms

opposedcontradictorycontraryincompatibleirreconcilableconflicting

Antonyms

consistentcompatiblecongruousharmonious

🌱 Word Family

antithesis (n), antitheses (n pl), antithetical (adj), antithetically (adv), antithetic (adj)

🔡 Root

Greek anti- (against) + tithenai (to put, place) → antithetikos (setting in opposition); via Late Latin.

📜 Etymology

From Greek antithetikos "setting in opposition" (from antithetos "opposed"), via Late Latin antithesis, from Greek anti- "against" + tithenai "to put, place"; entered English in the late 1500s.

🧠 Memory Hook

Break it into ANTI + THESIS: an "anti-thesis" is the exact counter-claim that stands directly against a thesis — so anything "antithetical" is dead set against, the polar opposite.

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Prelims 2026 Key
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