Cracking the UPSC CDS English paper requires more than just a good vocabulary; it demands a strategic grasp of high-frequency words that the UPSC loves to repeat. Vocabulary, specifically Antonyms and Synonyms, typically accounts for 20-30 questions, making it a make-or-break section for IMA, INA, AFA, and OTA aspirants.
In this article, we have curated a comprehensive list of important Antonyms and Synonyms for the CDS exam, based on thorough analysis of previous year question papers (PYQs). Whether you are looking for expected vocabulary trends for the upcoming exam or a quick revision capsule, these solved questions will help you eliminate options accurately and boost your sectional cutoff.
Top Most Important Synonyms and Antonyms for CDS 1 2026
[Q] Select the most appropriate SYNONYM of the word: "Meticulous"
A. Careless
B. Thorough
C. Hasty
D. Negligent
Answer: B. Thorough
Explanation: Meticulous means showing great attention to detail; very careful and precise. “Thorough” closely matches this meaning.
Hindi Meaning: सूक्ष्मदर्शी / अत्यंत सावधान
Synonyms: Precise, Diligent, Scrupulous
Antonyms: Careless, Negligent, Reckless
[Q] Select the most appropriate ANTONYM of the word: "Abundant"
A. Plentiful
B. Scarce
C. Ample
D. Overflowing
Answer: B. Scarce
Explanation: Abundant means existing in large quantities; plentiful. Its opposite is “Scarce,” meaning insufficient or limited.
Hindi Meaning: प्रचुर / अधिक मात्रा में
Synonyms: Plentiful, Ample, Copious
Antonyms: Scarce, Rare, Insufficient
[Q] Select the most appropriate SYNONYM of the word: "Prudent"
A. Careless
B. Wise
C. Impulsive
D. Rash
Answer: B. Wise
Explanation: Prudent means acting with care, thought, and good judgment for the future. “Wise” is the closest in meaning.
Hindi Meaning: विवेकी / समझदार
Synonyms: Sensible, Judicious, Cautious
Antonyms: Careless, Reckless, Impulsive
[Q] Select the most appropriate ANTONYM of the word: "Diligent"
A. Hardworking
B. Industrious
C. Lazy
D. Careful
Answer: C. Lazy
Explanation: Diligent means showing persistent effort and hard work. Its opposite is “Lazy,” meaning unwilling to work or use energy.
Hindi Meaning: परिश्रमी
Synonyms: Industrious, Hardworking, Assiduous
Antonyms: Lazy, Idle, Negligent
[Q] Select the most appropriate SYNONYM of the word: "Reluctant"
A. Willing
B. Eager
C. Hesitant
D. Enthusiastic
Answer: C. Hesitant
Explanation: Reluctant means unwilling or hesitant to do something. “Hesitant” best matches this meaning.
Hindi Meaning: अनिच्छुक / हिचकिचाने वाला
Synonyms: Unwilling, Disinclined, Resistant
Antonyms: Willing, Eager, Ready
[Q] Select the most appropriate ANTONYM of the word: "Rigid"
A. Stiff
B. Flexible
C. Strict
D. Firm
Answer: B. Flexible
Explanation: Rigid means stiff or not easily bent or changed. Its opposite is “Flexible,” meaning adaptable or pliable.
Hindi Meaning: कठोर / अड़ियल
Synonyms: Stiff, Strict, Inflexible
Antonyms: Flexible, Adaptable, Elastic
[Q] Select the most appropriate SYNONYM of the word: "Vigilant"
A. Careless
B. Watchful
C. Sleepy
D. Distracted
Answer: B. Watchful
Explanation: Vigilant means keeping careful watch for possible danger or difficulties. “Watchful” is the closest synonym.
Hindi Meaning: सतर्क / चौकस
Synonyms: Alert, Observant, Attentive
Antonyms: Careless, Negligent, Inattentive
[Q] Select the most appropriate ANTONYM of the word: "Scarce"
A. Rare
B. Limited
C. Plentiful
D. Insufficient
Answer: C. Plentiful
Explanation: Scarce means insufficient or in short supply. Its opposite is “Plentiful,” meaning abundant.
Hindi Meaning: दुर्लभ / कम मात्रा में
Synonyms: Rare, Limited, Insufficient
Antonyms: Plentiful, Abundant, Ample
[Q] Select the most appropriate SYNONYM of the word: "Resilient"
A. Fragile
B. Flexible
C. Weak
D. Brittle
Answer: B. Flexible
Explanation: Resilient means able to recover quickly or adapt to difficulties. “Flexible” best matches this sense of adaptability.
Hindi Meaning: लचीला / शीघ्र संभलने वाला
Synonyms: Adaptable, Tough, Elastic
Antonyms: Fragile, Weak, Brittle
[Q] Select the most appropriate ANTONYM of the word: "Obscure"
A. Hidden
B. Vague
C. Clear
D. Dim
Answer: C. Clear
Explanation: Obscure means not clear or difficult to understand. Its opposite is “Clear,” meaning easy to understand.
Hindi Meaning: अस्पष्ट / अज्ञात
Synonyms: Vague, Unclear, Hidden
Antonyms: Clear, Obvious, Evident
[Q] Select the most appropriate SYNONYM of the word: "Candid"
A. Secretive
B. Honest
C. Reserved
D. Diplomatic
Answer: B. Honest
Explanation: Candid means truthful and straightforward in expression. “Honest” is the closest synonym.
Hindi Meaning: स्पष्टवादी / ईमानदार
Synonyms: Frank, Sincere, Open
Antonyms: Deceitful, Secretive, Dishonest
[Q] Select the most appropriate ANTONYM of the word: "Expand"
A. Grow
B. Stretch
C. Contract
D. Increase
Answer: C. Contract
Explanation: Expand means to increase in size or scope. Its opposite is “Contract,” meaning to shrink or reduce.
Hindi Meaning: फैलाना / विस्तार करना
Synonyms: Enlarge, Extend, Broaden
Antonyms: Contract, Shrink, Reduce
Success in the UPSC CDS English paper isn’t just about memorizing the dictionary; it’s about mastering the high-frequency Antonyms and Synonyms that the exam frequently revisits. As we’ve seen, understanding the nuances of words like Meticulous or Resilient can be the difference between clearing the sectional cutoff and missing out on your dream academy—be it IMA, INA, AFA, or OTA.
By consistently practicing these CDS Previous Year Question (PYQ) trends, you develop the "elimination instinct" necessary to tackle even the trickiest options. Remember, vocabulary is the highest-scoring section if approached strategically. Make these words a part of your daily revision capsule to ensure you're exam-ready.
Boost Your Preparation Further:
Don't stop here! Pair your vocabulary drills with regular mock tests and reading comprehension practice to build overall linguistic fluency. Stay vigilant, stay diligent, and your name will surely be on the final merit list.
