Basic Structure

noun (uncountable; proper noun in constitutional usage)

/ˈbeɪsɪk ˈstrʌktʃə/

The doctrine that the Indian Constitution has certain core features so fundamental that no constitutional amendment under Article 368 can abrogate or destroy them. Established by the Supreme Court in Kesavananda Bharati v. State of Kerala (1973) by a 7–6 majority, the doctrine has since been used to strike down the 39th, 42nd, and 99th Amendments. Identified elements include supremacy of the Constitution, republican and democratic form of government, secularism, separation of powers, federalism, and judicial review.

✍️ Usage in a UPSC answer

The Supreme Court in S.R. Bommai v. Union of India (1994) invoked the basic structure doctrine to hold that secularism is an unamendable feature of the Constitution, restricting the Centre's power to impose President's Rule on sectarian grounds.

Synonyms

unamendable coreconstitutional essentialsimplied limitationseternity clause

Antonyms

parliamentary sovereignty (antithetical concept)unlimited amending power

🌱 Word Family

structural (adjective), structurally (adverb), structure (verb/noun), basis (noun), basic (adjective)

🔡 Root

Latin basis (foundation) ← Greek basis (stepping, base) + Latin structura (building) ← struere (to pile, to build)

📜 Etymology

The concept was judicially synthesised in 1973 drawing on German Grundgesetz's Ewigkeitsklausel (eternity clause) and the writings of jurist H.R. Khanna. The phrase 'basic structure' (not found in the Constitution's text) was coined in litigation to describe an implied limitation on constituent power.

🧠 Memory Hook

The BASE of a building cannot be removed without the whole structure collapsing — the BASIC STRUCTURE doctrine says the same about the Constitution. Kesavananda in 1973 laid this indestructible BASE.

📝 Seen in UPSC Question Papers

Prelims 2020 — Emergency Provisions
Mains 2019 · GS2 · 15 marks — Indian Polity
Mains 2014 · GS2 · 12.5 marks — Indian Polity

Real UPSC previous-year questions whose text uses “Basic Structure” — proof this word earns its place on your list.

⚖️ Polity & Constitution 📖 Seen in: Preamble of the Indian Constitution

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