Prime

20 new English words for 10 September 2026, each with its meaning, Hindi meaning, synonyms, antonyms and an example sentence. Learn them today and revise them with the daily quiz — useful for SSC, Bank, Railway, UPSC and IELTS.

1 Perfunctory (adjective)

Perfunctory - Done as a routine duty, without real interest, care or effort.

Done as a routine duty, without real interest, care or effort.

Hindi meaning: औपचारिक, लापरवाह

Synonyms: Cursory, Superficial, Mechanical, Half-Hearted

Antonyms: Thorough, Diligent, Careful, Meticulous

Example: The guard gave the bag a perfunctory look and waved us in.

Trick: Perfunctory sounds like 'per function' - bas function pura karne ke liye kiya gaya kaam, dil se nahi, sirf khanapurti.

2 Inviolable (adjective)

Inviolable - Too important or sacred to be broken, attacked or ignored.

Too important or sacred to be broken, attacked or ignored.

Hindi meaning: अनुल्लंघनीय, पवित्र

Synonyms: Sacrosanct, Unbreakable, Sacred, Untouchable

Antonyms: Breakable, Violable, Negotiable, Alterable

Example: In our family, Sunday dinner together is an inviolable rule.

Trick: Inviolable = in (nahi) + violate - jise violate hi nahi kiya ja sakta, jaise Constitution ke fundamental rights.

3 Acquiescence (noun)

Acquiescence - Quiet acceptance of something without protest, even if one is not happy about it.

Quiet acceptance of something without protest, even if one is not happy about it.

Hindi meaning: मौन सहमति, स्वीकृति

Synonyms: Consent, Compliance, Assent, Submission

Antonyms: Resistance, Refusal, Objection, Defiance

Example: Her silence at the meeting was taken as acquiescence to the new timings.

Trick: Acquiescence mein 'quiet' chhupa hai - quietly haan keh dena, bina shor, bina virodh.

4 Corrosive (adjective)

Corrosive - Slowly eating away or destroying something, whether metal or trust.

Slowly eating away or destroying something, whether metal or trust.

Hindi meaning: क्षयकारी, विनाशकारी

Synonyms: Destructive, Caustic, Erosive, Damaging

Antonyms: Harmless, Protective, Healing, Benign

Example: Constant sarcasm has a corrosive effect on a team's morale.

Trick: Corrosive = acid jo lohe ko rust karke dheere-dheere kha jata hai; waise hi corrosive distrust rishte kha jata hai.

5 Onerous (adjective)

Onerous - Involving heavy effort, duty or expense; burdensome.

Involving heavy effort, duty or expense; burdensome.

Hindi meaning: बोझिल, भारी

Synonyms: Burdensome, Taxing, Arduous, Demanding

Antonyms: Easy, Light, Effortless, Simple

Example: Filing three separate returns every month proved onerous for the small shop.

Trick: Onerous mein 'on us' sunai deta hai - saara bojh on us aa gaya, matlab kaam bahut bhaari.

Unlock all 20 words for 10 September 2026

The first 5 words are free. Prime opens every word, every day — with tricks, quizzes and the full editorial vocabulary.

Get Prime Open in the Vocab24 app

6 Discordant (adjective)

Discordant - Not in agreement or harmony; harsh and clashing in sound or opinion.

Not in agreement or harmony; harsh and clashing in sound or opinion.

Hindi meaning: बेसुरा, असंगत

Synonyms: Clashing, Jarring, Dissonant, Conflicting

Antonyms: Harmonious, Agreeing, Melodious, Consistent

Example: His angry remark struck a discordant note at the farewell party.

Trick: Dis + chord - guitar ke chord bigad gaye, sur besura ho gaya; discordant matlab tal-mel bigda hua.

7 Intractable (adjective)

Intractable - Very hard to solve, control or deal with.

Very hard to solve, control or deal with.

Hindi meaning: दुस्साध्य, ज़िद्दी

Synonyms: Unmanageable, Stubborn, Insoluble, Obstinate

Antonyms: Manageable, Solvable, Docile, Tractable

Example: Water sharing between the two states remains an intractable problem.

Trick: In + tract (kheenchna) - jise kheencha hi na ja sake, na control ho na solve ho; jaise ziddi bail jo hilta nahi.

8 Obfuscation (noun)

Obfuscation - The act of making something deliberately unclear or confusing.

The act of making something deliberately unclear or confusing.

Hindi meaning: भ्रम, अस्पष्टता

Synonyms: Confusion, Vagueness, Cloudiness, Concealment

Antonyms: Clarity, Transparency, Explanation, Openness

Example: The reply to our query was pure obfuscation, full of jargon and no numbers.

Trick: Obfuscation mein 'fog' jaisa feel hai - baat par fog daal dena taaki sach clearly na dikhe.

9 Profligacy (noun)

Profligacy - Reckless, wasteful spending of money or resources.

Reckless, wasteful spending of money or resources.

Hindi meaning: फ़िज़ूलख़र्ची, अपव्यय

Synonyms: Extravagance, Wastefulness, Squandering, Prodigality

Antonyms: Thrift, Frugality, Economy, Prudence

Example: The audit blamed the loss on the profligacy of the earlier management.

Trick: Profligacy mein 'fling' chhupa socho - paise ko fling karke udaana, bina soche kharch karna.

10 Complacency (noun)

Complacency - Smug satisfaction with things as they are, so that one stops trying or checking.

Smug satisfaction with things as they are, so that one stops trying or checking.

Hindi meaning: आत्मसंतुष्टि, ढिलाई

Synonyms: Self-Satisfaction, Smugness, Laxity, Overconfidence

Antonyms: Vigilance, Alertness, Diligence, Concern

Example: One good mock test led to complacency, and his score fell the next month.

Trick: Complacency = 'complete + easy' feel karna - sab set hai sochkar aaram se lat pasar jaana aur mehnat band.

11 Exhortation (noun)

Exhortation - Strong urging or encouragement to do something.

Strong urging or encouragement to do something.

Hindi meaning: प्रोत्साहन, आग्रह

Synonyms: Urging, Appeal, Encouragement, Admonition

Antonyms: Discouragement, Dissuasion, Silence, Deterrence

Example: The principal's exhortation to read daily changed a few students' habits.

Trick: Exhortation mein 'exhort' = ex + short - coach ka short josh-bhara bhashan jo team ko push karta hai.

12 Sanguine (adjective)

Sanguine - Cheerfully confident and optimistic, especially about a difficult situation.

Cheerfully confident and optimistic, especially about a difficult situation.

Hindi meaning: आशावादी, ख़ुशमिज़ाज

Synonyms: Optimistic, Hopeful, Confident, Upbeat

Antonyms: Pessimistic, Gloomy, Anxious, Despondent

Example: She stayed sanguine about the result even after a tough paper.

Trick: Sanguine ko todo 'sang + win' - jo maanta hai apni sang wali team win karegi, wahi optimistic hai.

13 Indispensable (adjective)

Indispensable - So necessary that you cannot manage without it.

So necessary that you cannot manage without it.

Hindi meaning: अनिवार्य, अपरिहार्य

Synonyms: Essential, Vital, Crucial, Necessary

Antonyms: Dispensable, Unnecessary, Optional, Superfluous

Example: A good dictionary is indispensable for serious exam preparation.

Trick: In + dispensable - jise dispense ya hataya nahi ja sakta; bina uske kaam ruk jaata hai.

14 Culpable (adjective)

Culpable - Deserving blame for something wrong that has happened.

Deserving blame for something wrong that has happened.

Hindi meaning: दोषी, निंदनीय

Synonyms: Blameworthy, Guilty, Answerable, At Fault

Antonyms: Blameless, Innocent, Faultless, Excusable

Example: The contractor was held culpable for using substandard cement.

Trick: Culpable mein 'culprit' chhupa hai - culprit hi culpable hota hai, matlab dosh ke layak.

15 Avarice (noun)

Avarice - Extreme greed for money or possessions.

Extreme greed for money or possessions.

Hindi meaning: लालच, लोभ

Synonyms: Greed, Cupidity, Rapacity, Covetousness

Antonyms: Generosity, Contentment, Charity, Selflessness

Example: Avarice made the builder add two illegal floors to the house.

Trick: Avarice yaad rakho 'aur-aur' se - lalachi aadmi ke muh se sirf nikalta hai aur do, aur do paisa.

16 Facile (adjective)

Facile - Too simple to be convincing; achieved too easily and without depth.

Too simple to be convincing; achieved too easily and without depth.

Hindi meaning: सतही, सरलीकृत

Synonyms: Superficial, Simplistic, Shallow, Glib

Antonyms: Profound, Thorough, Considered, Deep

Example: Blaming students for the traffic mess is a facile explanation.

Trick: Facile sounds like 'facility' - jahan sab easy ho; par facile matlab itna easy ki satahi aur bekaar argument.

17 Asymmetry (noun)

Asymmetry - A lack of balance or equality between two sides, parties or amounts.

A lack of balance or equality between two sides, parties or amounts.

Hindi meaning: असमानता, विषमता

Synonyms: Imbalance, Inequality, Disparity, Unevenness

Antonyms: Symmetry, Balance, Parity, Equality

Example: There is a clear asymmetry of power between a landlord and a new tenant.

Trick: A (nahi) + symmetry - dono side barabar nahi; power ki asymmetry mein ek pallda hamesha bhaari.

18 Treacherous (adjective)

Treacherous - Not to be trusted; or looking safe while actually being dangerous.

Not to be trusted; or looking safe while actually being dangerous.

Hindi meaning: विश्वासघाती, ख़तरनाक

Synonyms: Disloyal, Deceitful, Perilous, Unreliable

Antonyms: Loyal, Faithful, Safe, Trustworthy

Example: The wet ghat road looks calm but is treacherous after dark.

Trick: Treacherous mein 'treachery' = gaddaari; socho pahaadi rasta jo smooth dikhe par dhoka de aur phisla de.

19 Accretion (noun)

Accretion - Slow growth or increase by the gradual addition of layers or parts.

Slow growth or increase by the gradual addition of layers or parts.

Hindi meaning: वृद्धि, संचय

Synonyms: Accumulation, Build-Up, Growth, Increment

Antonyms: Erosion, Depletion, Reduction, Loss

Example: His vocabulary grew by the quiet accretion of ten words a day.

Trick: Accretion, 'accrue' se juda - jaise bank mein interest roz thoda-thoda jamta hai, layer par layer badhta hai.

20 Adversarial (adjective)

Adversarial - Involving opposition or conflict between two sides.

Involving opposition or conflict between two sides.

Hindi meaning: विरोधात्मक, टकराव वाला

Synonyms: Antagonistic, Confrontational, Hostile, Combative

Antonyms: Cooperative, Collaborative, Friendly, Amicable

Example: The meeting turned adversarial once the audit report was mentioned.

Trick: Adversary matlab virodhi ya dushman; adversarial socho court ke do lawyers ko aamne-saamne behes karte hue.

PRIMEfrom ₹199 / month

Unlock everything, every day

  • Tap any word for its meaning, unlimited (free: 10 taps a day)
  • All 6 editorials daily (The Hindu, Indian Express topics, long read), not just the free ones
  • All 20 words with Hindi meaning, examples and memory tricks
  • 1000+ practice tests: cloze, one word, spelling, spotting errors, idioms, RC and previous year papers
  • Unlimited live speaking practice with real people
  • 60+ A to Z vocabulary videos (3000+ words with tricks) in the app
See Prime plans →

One Prime for the website and the app, same login. Videos play in the app.

Subscribe to our newsletter!

* Your mail address will be fully secure . We don’t share!