Idioms, Phrases and One-Word Substitution

Idioms/phrases and one-word substitution are direct-recall scorers in NDA GAT English — a handful of quick questions each paper. They cannot be reasoned out fully, so targeted memorisation of common items is the winning strategy.

Core ideas

Idioms are fixed expressions whose meaning is not literal. High-frequency examples:

• 'A blessing in disguise' — a hidden benefit.
• 'To burn the midnight oil' — to work/study late.
• 'To let the cat out of the bag' — to reveal a secret.
• 'A bolt from the blue' — a sudden shock.
• 'To turn a blind eye' — to ignore deliberately.
• 'To bite the bullet' — to endure something difficult.

One-word substitution replaces a phrase with a single precise word:

• One who studies the stars — astronomer.
• One who cannot read or write — illiterate.
• A person who does not believe in God — atheist.
• A speech made without preparation — extempore.
• Fear of water — hydrophobia; animals that eat flesh — carnivorous.

Exam Tricks & Tips

• 🎯 Learn idioms in themed clusters (money, work, danger) — grouping aids recall under exam pressure.
• 🎯 For one-word substitution, decode Greek/Latin roots: 'phobia' = fear, 'cide' = kill, 'logy' = study of.
• 🎯 Do not read idioms literally; the answer is the figurative meaning, so reject literal-looking options.
• 🎯 Eliminate options that are the wrong part of speech for the required substitute.
• 🎯 When unsure of an idiom, use the sentence context to narrow to positive/negative sense.
• ❌ Common mistake: choosing the literal meaning of an idiom. 'To let the cat out of the bag' is not about a cat — it means revealing a secret.

Expected exam pattern

Expect a few 'choose the meaning of the idiom' items and a few 'one word for the given phrase' items. Both are recall-heavy; roots and clustered study crack most.

Quick recap

Idioms are figurative — learn common ones in clusters and never read them literally. For one-word substitution, use Greek/Latin roots (phobia, cide, logy) and match part of speech. Context fixes positive vs negative sense.

Cover, recall, check. 12 cards on idioms and substitutions.

Q1. Meaning of 'a blessing in disguise'?
A1. A hidden benefit that first seemed bad.

Q2. Meaning of 'to burn the midnight oil'?
A2. To work or study late into the night.

Q3. Meaning of 'to let the cat out of the bag'?
A3. To reveal a secret (usually accidentally).

Q4. Meaning of 'a bolt from the blue'?
A4. A sudden, unexpected shock.

Q5. Meaning of 'to bite the bullet'?
A5. To endure a painful/difficult situation bravely.

Q6. One word: 'one who studies the stars'?
A6. Astronomer.

Q7. One word: 'a speech made without preparation'?
A7. Extempore.

Q8. One word: 'a person who does not believe in God'?
A8. Atheist.

Q9. Root meaning of 'phobia' and 'cide'?
A9. 'phobia' = fear; 'cide' = kill.

Q10. One word: 'animals that eat flesh'?
A10. Carnivorous.

Q11. Meaning of 'to turn a blind eye'?
A11. To deliberately ignore something.

Q12. Golden rule for interpreting idioms?
A12. Take the figurative meaning, never the literal one.

Idioms, phrases and one-word substitution reward wide reading and memory. They are pure-recall marks in NDA English — quick if you know them, guesswork if you don't.

Core idea / what this tests: Knowing the figurative meaning of common idioms and the single precise word for a longer description.

Deep explanation

Beginner — Idioms and phrases

An idiom is a fixed expression whose meaning is not literal:

• "To let the cat out of the bag" = to reveal a secret.
• "A blessing in disguise" = something good that first seemed bad.
• "To bite the bullet" = to endure a hard situation bravely.
• "Once in a blue moon" = very rarely.

Intermediate — One-word substitution

This format gives a definition and asks for the single word that means it:

• One who studies the stars and planets = astronomer.
• A place where soldiers live = barracks.
• One who cannot read or write = illiterate.
• Government by the people = democracy.
• One who loves mankind = philanthropist.

Advanced — Distinguishing near-misses

Options often include close but wrong words. "Astronomer" (stars) vs "astrologer" (predicting from stars) vs "astronaut" (space traveller) are a classic trio. Similarly "manuscript" (handwritten) vs "typescript". Precision — the exact scope of the definition — decides the answer, so read the definition's key word carefully.

Worked example

One-word substitution: "A person who speaks many languages."
Consider the options logically. Someone fluent in several languages is a polyglot ("poly" = many, "glot" = tongue/language). (A "linguist" studies language generally; "polyglot" specifically means many-language speaker — the precise fit.)

NDA relevance

These are direct, memory-based marks appearing every year. Because they cannot be reasoned out from grammar, a steady habit of learning a few idioms and substitutions each day is the only reliable preparation — and it also enriches essay writing for the SSB stage.

Exam tricks & shortcuts

• Use word roots for one-word substitution ("phil" = love, "cide" = killing, "cracy" = rule) to decode unfamiliar options.
• Learn idioms in themed clusters (money, time, danger) for better recall.
• For near-miss options, focus on the key word of the definition ("many languages" → polyglot).
• When unsure of an idiom, eliminate literal-meaning options — idioms are figurative.

Worked Example

Problem: (i) Give the meaning of the idiom "to bury the hatchet" and use it in a sentence. (ii) Give the one-word substitution for "a person who can speak many languages."

Solution:
(i) "To bury the hatchet" is an idiom — its meaning cannot be worked out literally from "bury" and "hatchet." It comes from a Native American custom of burying weapons to signal peace. It therefore means to end a quarrel and become friendly again.
Sentence: "After years of rivalry, the two companies decided to bury the hatchet and work together."

Test against context: it must convey reconciliation, which "work together" confirms.

(ii) One-word substitution replaces a descriptive phrase with a single precise word.
"A person who can speak many languages" = a polyglot. (Related: a person who speaks two languages is bilingual; one who studies many subjects is a polymath.)

Answer: (i) "To bury the hatchet" = to make peace / end a quarrel. (ii) polyglot.