500+ Most Commonly Asked Idioms & Phrases For NDA CDS AFCAT Exam

English idioms and phrases form a high-scoring, predictable component of the General English papers in NDA, CDS, and AFCAT. Questions typically appear as direct “choose the correct meaning” multiple-choice items (usually 2–5 questions per paper). Once candidates master the figurative meaning, these can be answered in seconds with high accuracy.

Idioms do not carry literal meanings. “Bite the bullet” has nothing to do with ammunition; it means facing a difficult or painful situation with courage. Examiners test whether aspirants recognise the conventional figurative sense used in standard English. Many of the same expressions have repeated across NDA, CDS, and AFCAT papers over the last several years, making targeted preparation highly effective.

Why Focus on Idioms & Phrases?

• They are among the most reliable scoring topics in the English section.
• Mastery improves overall language sense, which helps in reading comprehension and sentence improvement as well.
• Several military-flavoured idioms (hold the fort, stick to one’s guns, face the music, keep one’s powder dry) appear naturally in defence-related passages and also prove useful during SSB interviews.

How Questions Are Asked

Most questions simply give the idiom and four options for its meaning. Occasional variants place the idiom inside a short sentence and ask for the best interpretation. Pure vocabulary lists without context are rare; examiners prefer clear, standard meanings.

Preparation Strategy

• Learn meaning + one clear example sentence for each idiom.
• Group them by theme (hard work, difficulty, emotions, communication, etc.) rather than pure alphabetical order for better retention.
• Relate them to similar expressions in your mother tongue where possible.
• Prioritise previous-year questions (PYQs) from NDA, CDS, and AFCAT. Many expressions recycle.
• Revise daily in short sessions. Use them in your own writing and speaking so they become automatic.
• Maintain a personal notebook of the highest-frequency items and test yourself regularly.

The curated list below covers the most frequently tested and high-probability idioms drawn from defence-exam trends and standard competitive-exam sources. While published compilations often advertise “500+”, the practical core that accounts for the large majority of actual questions is smaller and more manageable. Master the ones given here thoroughly; expand further from standard books or verified PDFs as needed.

High-Frequency Idioms & Phrases (Categorised)

Hard Work, Effort, Discipline & Success

• Burn the midnight oil — work or study late into the night. Example: Serious aspirants burn the midnight oil before NDA written exams.
• Leave no stone unturned — try every possible method. The rescue team left no stone unturned to locate the missing soldiers.
• Go the extra mile — do more than is required. Good officers go the extra mile for their men.
• Come off with flying colours — succeed brilliantly. She came off with flying colours in the SSB interview.
• Make a mark — achieve distinction or recognition. The young lieutenant made a mark during the operation.
• Bring home the bacon — earn a living or achieve success. He works hard to bring home the bacon for his family.
• Pull one’s weight — do one’s fair share of work. Every member of the squad must pull their weight.
• On the ball — alert and competent. The new platoon commander is always on the ball.
• Hit the nail on the head — say or do exactly the right thing. His analysis of the tactical problem hit the nail on the head.
• Bear fruit — produce successful results. Years of training finally bore fruit when he cleared CDS.

Difficulty, Challenges, Failure & Risk

• Bite the bullet — face a painful or difficult situation bravely. The injured soldier bit the bullet and continued the march.
• A hard nut to crack — a difficult person or problem. The enemy position proved a hard nut to crack.
• Between the devil and the deep blue sea — facing two equally bad choices. The commander was between the devil and the deep blue sea.
• In a tight corner / in a tight spot — in a difficult situation. The unit found itself in a tight corner after the ambush.
• Face the music — accept the consequences of one’s actions. He had to face the music for the delayed report.
• Miss the boat — miss an opportunity. He missed the boat by not applying for the course in time.
• Back to square one / back to the drawing board — start again from the beginning. After the plan failed, they were back to square one.
• On thin ice — in a risky or precarious position. The officer was skating on thin ice with his superiors.
• A close shave — a narrow escape. The convoy had a close shave with the IED.
• Throw caution to the winds — act recklessly. In the final assault they threw caution to the winds.

Emotions, Behaviour & Human Nature

• Under the weather — feeling ill. The cadet was under the weather and missed PT.
• On cloud nine / over the moon / in seventh heaven — extremely happy. The entire batch was on cloud nine after the results.
• At sixes and sevens — in a state of confusion or disorder. The camp was at sixes and sevens after the sudden alert.
• Keep one’s cool / keep a straight face — remain calm. The instructor kept his cool despite the provocation.
• Lose one’s temper — become angry. He rarely loses his temper even under pressure.
• Wear one’s heart on one’s sleeve — show emotions openly. He wears his heart on his sleeve and is easy to read.
• Cry over spilled milk — regret something that cannot be changed. There is no point crying over spilled milk after the exam is over.
• A chip off the old block — a son who resembles his father in character. The young officer is a chip off the old block.
• Fair-weather friend — a friend who disappears in difficult times. True comrades are not fair-weather friends.
• An axe to grind — a personal, selfish motive. He has an axe to grind in that posting.

Communication, Secrets & Understanding

• Beat around the bush — avoid the main point. Stop beating around the bush and give the clear order.
• Call a spade a spade — speak frankly and directly. A good leader calls a spade a spade.
• Spill the beans / let the cat out of the bag — reveal a secret. Someone spilled the beans about the surprise inspection.
• Read between the lines — understand the hidden meaning. Experienced officers learn to read between the lines in intelligence reports.
• Turn a deaf ear — ignore deliberately. He turned a deaf ear to the rumours.
• Gift of the gab — ability to speak persuasively. He has the gift of the gab and does well in interviews.
• Put two and two together — draw a logical conclusion. From the evidence he put two and two together.
• Make a clean breast of it — confess fully. He made a clean breast of the mistake.

Time, Opportunity, Decisions & Change

• Once in a blue moon — very rarely. Such perfect weather occurs once in a blue moon in the desert.
• At the eleventh hour — at the last possible moment. Reinforcements arrived at the eleventh hour.
• In the long run — over an extended period. Discipline pays in the long run.
• Jump the gun — act too soon. They jumped the gun by announcing the result early.
• Turn over a new leaf — change one’s behaviour for the better. After the warning he turned over a new leaf.
• The ball is in your court — it is your turn to act or decide. The ball is now in the selection board’s court.
• Play it by ear — decide according to how the situation develops. We will play the reconnaissance by ear.
• In the offing — likely to happen soon. A major exercise is in the offing.

Conflict, Peace, Relationships & Strategy

• At daggers drawn — bitterly hostile. The two neighbouring posts were at daggers drawn.
• Bury the hatchet — end a quarrel and make peace. The two units buried the hatchet after the joint exercise.
• Stick to one’s guns — refuse to change one’s position under pressure. He stuck to his guns during the court of inquiry.
• Hold the fort — take responsibility in someone’s absence. The junior officer held the fort while the CO was away.
• Steal a march on — gain an advantage by acting earlier. The battalion stole a march on the enemy by moving at night.
• Keep someone at arm’s length / keep at bay — maintain distance. He keeps unreliable sources at arm’s length.
• Add fuel to the fire — make a bad situation worse. The leaked report added fuel to the fire.
• A bone of contention — a subject of dispute. The boundary became a bone of contention.

Military-Flavoured & Miscellaneous High-Value Idioms

• Keep one’s powder dry — stay ready and prepared. Always keep your powder dry in operational areas.
• Win one’s spurs — prove oneself and earn recognition. The young captain won his spurs in the counter-insurgency operation.
• Rank and file — ordinary members (as opposed to leaders). The rank and file of the unit remained highly motivated.
• By fits and starts — irregularly, not continuously. Training done by fits and starts produces poor results.
• Out of the woods — free from danger or difficulty. The patient is not yet out of the woods.
• At one’s wits’ end — completely puzzled, not knowing what to do. The investigators were at their wits’ end.
• A bolt from the blue — a sudden unexpected event. The resignation came as a bolt from the blue.
• A blessing in disguise — something that seems bad but turns out beneficial. The rejection was a blessing in disguise; he got a better posting later.
• Kill two birds with one stone — achieve two aims with one action. The joint exercise killed two birds with one stone.
• A piece of cake — something very easy. After thorough preparation the paper was a piece of cake.
• Cost an arm and a leg — be extremely expensive. Modern equipment costs an arm and a leg.
• Rain cats and dogs — rain very heavily. It rained cats and dogs during the outdoor exercise.
• Apple-pie order — perfectly neat and tidy. The barracks were kept in apple-pie order.
• Know the ropes — understand how something works. New recruits take time to know the ropes.
• Have a screw loose — be slightly eccentric or mentally unbalanced. People thought he had a screw loose after the incident.

Additional High-Frequency Items Worth Memorising

A bird in the hand is worth two in the bush; actions speak louder than words; bark up the wrong tree; by the skin of one’s teeth; cut corners; don’t put all your eggs in one basket; every cloud has a silver lining; fish out of water; get cold feet; hang in there; hit the sack; in black and white; let sleeping dogs lie; make both ends meet; no pain no gain; on tenterhooks; put one’s foot down; rock the boat; see eye to eye; smell a rat; take the bull by the horns; the last straw; through thick and thin; throw in the towel; under one’s thumb; wild goose chase; with flying colours.

Final Advice

Treat idioms as a scoring topic rather than a burden. Daily short revisions of 10–15 items, combined with PYQ practice, produce reliable results. Many of these expressions also enrich the language used in personal interviews and group discussions at the SSB. Focus first on the high-frequency core listed above, then expand systematically. Consistent effort on this topic alone can add several marks to the English paper of NDA, CDS, or AFCAT.

For the most complete coverage, cross-check against recent official question papers and maintain an updated personal list. Success in this section is largely a function of deliberate, repeated exposure rather than luck.

Also Read: 1000+ Most Commonly Asked Synonyms & Antonyms For NDA CDS AFCAT Exam [DOWNLOAD PDF]