Cogent

adjective
/ˈkəʊdʒənt/
(Of an argument, case, or reasoning) clear, logical, and convincing; powerful enough to compel acceptance or belief. A cogent point is well-marshalled and forceful because it is coherent and evidence-based.

✍️ Usage in a UPSC answer

The petitioner advanced a cogent argument that the indefinite suspension of fundamental rights during an Emergency violates the basic structure of the Constitution, compelling the Court to read in stricter procedural safeguards.

Synonyms

compellingconvincingpersuasiveforcefulwell-reasonedtelling

Antonyms

unconvincingweakspeciousincoherent

🌱 Word Family

cogent (adj), cogently (adv), cogency (n)

🔡 Root

Latin co- = together + agere = to drive → cogere = to drive together, compel; via French (c. 1659)

📜 Etymology

From Latin cogent-, cogens, present participle of cogere 'to drive together, compel, force' (from co- 'together' + agere 'to drive'); entered English via French in the mid-17th century (c. 1659).

🧠 Memory Hook

Cogent shares its root (agere, "to drive") with "agent" — a cogent argument is an active agent that drives its points "together" (co-) into your mind, forcing you to agree.

🎯 How This Word Works in UPSC Writing

Describes an argument that is clear, logical and convincing. It is a useful word for GS4 and Essay when appraising reasoning rather than conclusions, as in a cogent case for a policy. Note that it praises the structure of an argument, so it fits reasoning and not people or feelings, which is where it is commonly misapplied.

⚖️ Don’t Confuse It With

Cogent means logically compelling and clearly reasoned. Persuasive means effective at convincing, which a weak argument can also be. Valid is a technical property of logical form. Sound, in logic, means valid with true premises, which is a stronger claim than cogent.

🇮🇳 Hindi Meaning

तर्कसंगत (tarksangat) or ठोस (thos, solid).

Common Questions

What does cogent mean?
Clear, logical and convincing, said of an argument or line of reasoning.
Is a cogent argument the same as a persuasive one?
Not necessarily. Cogent describes the quality of the reasoning; persuasive describes its effect on an audience, which can be achieved by weak arguments too.
Relevant across:GS4 · Ethics, Integrity & Aptitude

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Resources
Ujiyari Ujiyari — Current Affairs