Word Meanings and Definitions
~13 min read
- What: Word Meanings and Definitions covers the vocabulary base of NDA English — one-word substitutions, word-meaning recall, and "this word means…" recognition items. The topic underwrites half the English paper.
- Why it matters: Directly: ~5 marks in any "one-word substitution" sub-block. Indirectly: vocabulary depth decides your Synonyms, Antonyms, Cloze, and comprehension accuracy.
- Key habit: Learn vocabulary by theme, not alphabetically. Words from the same domain reinforce each other; words from a dictionary list go in one ear and out the other.
Word Meanings and Definitions is the foundation topic for the entire NDA English paper. Every other vocabulary block — Synonyms, Antonyms, Idioms, Cloze, Comprehension, Sentence Completion — feeds off it. NDA does not always test it as a dedicated block, but the words you know decide your accuracy everywhere else.
The most efficient way to prepare is the One-Word Substitution path: learn a single word that captures a full descriptive phrase, and you have learned both a vocabulary item and a definition method in one stroke. "One who studies birds" → ornithologist; "a person who never eats meat" → vegetarian; "government by the few" → oligarchy. This page is built around that path.
Pair this page with Synonyms and Antonyms (where every word you learn pays double).
What This Topic Covers
NDA — Three Question Sub-types
- One-Word Substitution. A descriptive phrase is given; pick the single word that captures it. "Government by the people" → democracy.
- Word Meaning Recall. A word is given; pick the definition. (Same as Synonyms but the question is "what does this word mean?" rather than "which option means the same?")
- Vocabulary in Context. A short sentence uses a word; pick the meaning that fits the sentence. (Crosses into Synonyms territory.)
One-Word Substitutions — The Backbone
One-Word Substitutions are the highest-yield item type for this topic. Each substitution is a self-contained micro-definition. Here are the categories NDA draws from most often:
Category 1 — People & Professions
Ornithologist = bird expert; cartographer = map-maker; etymologist = word-origin scholar; entomologist = insect scientist; archaeologist = digger of ancient sites; philanthropist = lover of mankind (gives generously); misanthrope = hater of mankind; numismatist = coin collector; philatelist = stamp collector; autobiographer = one who writes their own life.
Category 2 — Government & Society
Democracy = rule by people; autocracy = rule by one (with absolute power); monarchy = rule by king/queen; aristocracy = rule by nobility; oligarchy = rule by a few; theocracy = rule by religious authority; plutocracy = rule by the wealthy; bureaucracy = rule by officials; anarchy = absence of government; republic = state with elected representatives.
Category 3 — Fear, Phobia & Mania
Claustrophobia = fear of enclosed spaces; agoraphobia = fear of open spaces; acrophobia = fear of heights; hydrophobia = fear of water; xenophobia = fear of foreigners; arachnophobia = fear of spiders; kleptomania = mania for stealing; pyromania = mania for fire; megalomania = obsession with power.
Category 4 — Words About Speech & Writing
Soliloquy = speaking to oneself aloud; monologue = long speech by one person; dialogue = conversation between two; eulogy = high praise (often of the dead); panegyric = elaborate praise; epitaph = words on a tomb; epilogue = closing section of a book; preamble = introductory statement; postscript = note added after the main text; anonymous = of unknown name.
Category 5 — Things You Cannot Do / Be
Inevitable = unavoidable; indelible = cannot be erased; illegible = cannot be read; inaudible = cannot be heard; incurable = cannot be cured; invincible = cannot be defeated; infallible = cannot fail; inexorable = cannot be moved by pleading; impeccable = cannot be faulted; insatiable = cannot be satisfied; ineffable = cannot be expressed in words.
The Definition-First Method
When you face an unfamiliar word, work from definition to word rather than from word to definition. The principle is the same as a crossword: you have most of the clue, you just need to think of the word that fits.
- Convert the phrase to a one-sentence definition. "Government by religious authority" → "theos (god) + kratos (rule) → theocracy".
- Search by root. If you know any Greek/Latin root in the options, you have an instant filter. -ology = study of; -phobia = fear of; -cide = killing of; -archy = rule of.
- Eliminate by part of speech. A "person who" answer must be a noun; an "act of" answer must usually be a noun ending in -ation, -ment, -ity. POS quickly kills ~25% of options.
- Eliminate by formality. If two options fit, pick the more formal — NDA prefers Latinate words over Germanic ones in one-word substitution answers.
The Root-First Habit
- Roots like -ology, -graphy, -ist, -archy, -phobia, -cide, -gamy are the keys to ~70% of NDA's one-word substitutions.
- Learn 30 roots → unlock ~300 vocabulary items.
- Roots also help you eliminate wrong options: a word ending -philia means "love of", so if the question asks for a fear, the -philia option is wrong by structure.
Worked Examples
Worked Example 1 — "One who studies birds"
Phrase: One who studies birds.
Options: (a) zoologist (b) ornithologist (c) anthropologist (d) palaeontologist
Root-first: -ologist = student of. So narrow by what comes before. ornis (Greek) = bird → ornithology = study of birds.
Eliminate: Zoologist = animals (broader). Anthropologist = humans. Palaeontologist = fossils.
Answer: (b) ornithologist.
Worked Example 2 — "Government by a few people"
Phrase: Government by a few people.
Options: (a) aristocracy (b) oligarchy (c) plutocracy (d) democracy
Root-first: -archy / -cracy = rule. Oligo = few. Aristos = best (nobility). Pluto = wealth. Demos = people.
Answer: (b) oligarchy.
Discrimination: Aristocracy specifies "the best/nobles", oligarchy specifies "the few" without saying who. NDA usually asks for "few" → oligarchy.
Worked Example 3 — "Words spoken by someone to themselves"
Phrase: A speech in which a character speaks to themselves alone.
Options: (a) monologue (b) dialogue (c) soliloquy (d) eulogy
Distinction: Monologue = a long speech, but to others. Dialogue = two-person talk. Eulogy = praise of someone. Soliloquy = literally "alone-talk" (Latin solus + loqui).
Answer: (c) soliloquy.
Worked Example 4 — "That cannot be erased"
Phrase: That cannot be rubbed out or erased.
Options: (a) inevitable (b) inaudible (c) indelible (d) inscrutable
Root-first: All start with in- (not). Root after: -evitable = avoidable; -audible = heard; -delible = able to be removed (Latin delere = destroy, same root as the keyboard's Delete key); -scrutable = able to be examined.
Answer: (c) indelible.
Worked Example 5 — "Fear of enclosed spaces"
Phrase: Fear of being shut in enclosed spaces.
Options: (a) acrophobia (b) claustrophobia (c) agoraphobia (d) hydrophobia
Root-first: Claustro- = enclosed (Latin claustrum, same root as cloister). Acro = heights; agora = open marketplace (so agoraphobia = open spaces); hydro = water.
Answer: (b) claustrophobia.
Worked Example 6 — "One who loves humankind"
Phrase: A person who promotes the welfare of others, especially by donating wealth.
Options: (a) misanthrope (b) philanthropist (c) altruist (d) humanitarian
Root-first: Phil- = love + -anthropos = mankind. Mis- = hate (so misanthrope is the opposite).
Discrimination: (c) altruist and (d) humanitarian are close, but NDA tradition favours philanthropist when the cue includes "donating wealth".
Answer: (b) philanthropist.
High-Frequency NDA Word Bank — 100 Items
Five themed sub-banks. Cover the meaning column for forward recall; flip for reverse. Self-test at end of each week.
Bank A — People & Profession (20)
| Word | Description |
|---|---|
| Ornithologist | One who studies birds |
| Entomologist | One who studies insects |
| Etymologist | One who studies word origins |
| Cartographer | One who draws maps |
| Numismatist | One who studies / collects coins |
| Philatelist | One who collects stamps |
| Pedagogue | A teacher (often used negatively) |
| Bibliophile | A lover of books |
| Misogynist | One who hates women |
| Misanthrope | One who hates mankind |
| Philanthropist | A lover of mankind (often donor) |
| Autocrat | An absolute ruler |
| Plutocrat | A ruler by virtue of wealth |
| Diplomat | An official handling foreign relations |
| Botanist | One who studies plants |
| Geologist | One who studies rocks / earth |
| Archaeologist | One who studies remains of past |
| Anthropologist | One who studies humans / societies |
| Connoisseur | An expert judge in matters of taste |
| Polyglot | One who speaks many languages |
Bank B — Government & Society (15)
| Word | Description |
|---|---|
| Democracy | Government by the people |
| Autocracy | Government by one with absolute power |
| Monarchy | Government by king or queen |
| Aristocracy | Government by nobility |
| Oligarchy | Government by a few |
| Plutocracy | Government by the wealthy |
| Theocracy | Government by religious authority |
| Bureaucracy | Government by officials |
| Anarchy | Absence of government |
| Republic | State with elected representatives |
| Federation | Union of states with central authority |
| Confederation | Looser union than federation |
| Dictatorship | Government by a single absolute ruler |
| Constitution | Set of fundamental laws of a state |
| Census | Official count of population |
Bank C — Fear, Mania, Love (15)
| Word | Description |
|---|---|
| Claustrophobia | Fear of enclosed spaces |
| Agoraphobia | Fear of open spaces |
| Acrophobia | Fear of heights |
| Hydrophobia | Fear of water |
| Xenophobia | Fear / hatred of foreigners |
| Arachnophobia | Fear of spiders |
| Necrophobia | Fear of death |
| Pyrophobia | Fear of fire |
| Kleptomania | Compulsive desire to steal |
| Pyromania | Compulsive desire to set fires |
| Megalomania | Obsession with power / grandeur |
| Bibliophilia | Love of books |
| Anglophile | One who loves English culture |
| Francophile | One who loves French culture |
| Misanthropy | Hatred of humankind |
Bank D — Speech & Writing (15)
| Word | Description |
|---|---|
| Soliloquy | Talking to oneself aloud |
| Monologue | Long speech by one person |
| Dialogue | Conversation between two |
| Eulogy | Speech of praise, often of the dead |
| Elegy | Poem of mourning |
| Epitaph | Words on a tombstone |
| Epilogue | Closing section of a work |
| Prologue | Opening section of a work |
| Preamble | Introductory statement |
| Postscript | Note added after main text |
| Synopsis | A brief summary |
| Paraphrase | Restatement in different words |
| Plagiarism | Passing off another's work as your own |
| Anthology | Collection of writings by various authors |
| Bibliography | List of sources used in a work |
Bank E — Cannot Be / Things Impossible (15)
| Word | Description |
|---|---|
| Inevitable | Cannot be avoided |
| Indelible | Cannot be erased |
| Illegible | Cannot be read |
| Inaudible | Cannot be heard |
| Incurable | Cannot be cured |
| Invincible | Cannot be defeated |
| Infallible | Cannot fail / make a mistake |
| Inexorable | Cannot be moved by pleading |
| Impeccable | Cannot be faulted |
| Insatiable | Cannot be satisfied |
| Ineffable | Cannot be expressed in words |
| Inscrutable | Cannot be understood by examination |
| Intangible | Cannot be touched / felt physically |
| Immutable | Cannot be changed |
| Ineligible | Cannot be chosen / qualified |
Bank F — Killing & Death (10)
| Word | Description |
|---|---|
| Suicide | Killing of oneself |
| Homicide | Killing of a human being |
| Genocide | Killing of an entire people |
| Patricide | Killing of one's father |
| Matricide | Killing of one's mother |
| Fratricide | Killing of one's brother |
| Sororicide | Killing of one's sister |
| Infanticide | Killing of an infant |
| Regicide | Killing of a king |
| Tyrannicide | Killing of a tyrant |
Bank G — Marriages, Bodies & Time (10)
| Word | Description |
|---|---|
| Monogamy | Marriage to one person |
| Polygamy | Marriage to many |
| Bigamy | Crime of marrying while still married to another |
| Celibacy | Abstention from marriage |
| Centenarian | A person of 100 years |
| Octogenarian | A person in their 80s |
| Nonagenarian | A person in their 90s |
| Annual | Yearly |
| Biennial | Every two years |
| Perennial | Lasting throughout the year / for a long time |
Roots and Prefixes That Save Time
Twenty roots unlock most one-word substitution items. Learn them as the highest-leverage vocabulary investment.
| Root | Meaning | Example word |
|---|---|---|
| -ology | study of | geology, biology |
| -ist | one who does | botanist, novelist |
| -cracy / -archy | rule / government | democracy, oligarchy |
| -phobia | fear of | claustrophobia |
| -mania | obsession with | kleptomania |
| -cide | killing of | homicide, genocide |
| -gamy | marriage | monogamy, bigamy |
| -graphy | writing / drawing | biography, cartography |
| phil- | loving | philanthropist |
| mis- | hatred | misanthrope, misogynist |
| auto- | self | autobiography, autocrat |
| poly- | many | polyglot, polygamy |
| mono- | one | monogamy, monologue |
| bi- | two | bilingual, biennial |
| omni- | all | omnipotent, omnivore |
| ante- | before | antecedent, antedate |
| post- | after | postscript, postmortem |
| circum- | around | circumnavigate |
| in- / im- | not | invincible, impossible |
| -able / -ible | capable of being | edible, audible |
Preparation Strategy
5-Week Vocabulary Plan
- Week 1: Banks A and B (people, government). Learn the 20 root list. Practise root-first method on 5 PYQ items / day.
- Week 2: Banks C and D (phobia/mania, speech).
- Week 3: Bank E (cannot-be words) and revise Banks A–D in random order.
- Week 4: Banks F and G (killing, marriage/time). Full self-test on 100 words.
- Week 5: Mixed daily quizzes — 10 items / day combining one-word substitutions, synonyms, antonyms. Track and revise misses.
The Highest-Leverage Habit
Every new word you meet, ask: "What is the root, and what other words share it?" One word becomes a family of five. Ornithology opens the -ology family (≈30 words). Phobia opens the -phobia family (≈12 words). This is how vocabulary compounds over weeks.
Drill One-Word Substitutions
NDA-pattern one-word substitution items with root-first explanations. Theme banks expand week by week.
Start Free Mock TestFrequently Asked Questions
Does NDA always have a Word Meanings or One-Word Substitution block?
Not as a fixed dedicated block in every paper, but the vocabulary base it covers shows up everywhere — in Synonyms, Antonyms, Cloze, and Comprehension. Treat this topic as foundation, not as an isolated section.
How many words should I learn for NDA English?
About 1,000–1,200 well-chosen words covering high-frequency vocabulary, one-word substitutions, idioms, and confusables. The 100-word bank on this page is a starter — add roughly 800 more from any standard exam vocabulary book (Bakshi, Wren & Martin, or Norman Lewis's Word Power Made Easy).
What is the best way to learn one-word substitutions?
By theme, with the root. Learn "-cracy = rule" once, and ten words come with it. Learn alphabetically, and the words decay. Theme + root = compound learning.
Are word origins really useful for exam prep?
For exam pressure-conditions, yes — origins act as a memory anchor. Inevitable is easier to remember as "in + e + vit = no escape" than as a flat dictionary entry. Origins reduce decay.
What if I see a word I have never heard of?
Use the root-first method. Even unknown words usually have a familiar root in there somewhere. Pseudonym? Pseudo- = false + -onym = name → "false name". Without ever having seen the word, you have a working definition.
Which NDA English topics depend on vocabulary?
All of them, but most directly: Synonyms, Antonyms, Cloze Test, Reading Passages, Sentence Completion, Idioms and Phrases.