Big picture
Vocabulary affects every part of the English paper: you need it to understand unseen passages, to answer "find the word that means…" questions, and to write with precision in letters, articles and literature answers. At Class 12, the goal is not long words for their own sake but the right word for the context, in the right register (formal or informal).
This lesson gives strategies for unfamiliar words and the main categories of vocabulary that examiners test.
Learning goals
Work out the meaning of unfamiliar words from context.
Choose between synonyms with different shades of meaning, and identify antonyms.
Use prefixes, suffixes and roots to decode words.
Understand and use common idioms and phrasal verbs.
Use natural collocations.
Use one-word substitutions.
Distinguish commonly confused words.
Choose formal or informal register and avoid redundancy and clichés.
Core ideas
1. Meaning from context
Look for clues around an unfamiliar word:
Clue | Example |
|---|---|
Definition | The region is arid, that is, it receives very little rain. |
Synonym | The speaker was verbose; her long-winded speech lasted an hour. |
Contrast | Unlike his gregarious brother, Arjun preferred being alone. (gregarious = sociable) |
Example | Perishable goods such as milk, fish and fruit must be refrigerated. |
Cause and effect | Because the instructions were ambiguous, students interpreted them differently. (ambiguous = having more than one meaning) |
Check your guess by replacing the word with it; the sentence should still make sense.
2. Synonyms, antonyms and shades of meaning
Synonyms are rarely exact. Choose by intensity and connotation (positive or negative feeling).
Neutral | Positive | Negative |
|---|---|---|
thin | slender, slim | skinny, scrawny |
determined | resolute, persistent | stubborn, obstinate |
curious | inquisitive | nosy, prying |
careful with money | thrifty, economical | stingy, miserly |
Antonyms: benevolent / malevolent; transparent / opaque; scarce / abundant; candid / evasive; optimistic / pessimistic; temporary / permanent.
3. Prefixes, suffixes and roots
Part | Meaning | Examples |
|---|---|---|
un-, in-, im-, il-, ir-, dis- | not | unfair, inaccurate, impossible, illegal, irregular, dishonest |
mis- | wrongly | misunderstand, misuse |
pre- | before | preview, precaution |
post- | after | postpone, postgraduate |
anti- | against | antibiotic, antisocial |
bene- | good | benefit, benevolent |
mal- | bad | malnutrition, malfunction |
-ology | study of | biology, psychology |
-cide | killing | pesticide, homicide |
bio (root) | life | biography, biodiversity |
chron (root) | time | chronological, synchronise |
dict (root) | say | predict, contradict |
-ful, -less (suffix) | full of, without | hopeful, careless |
-able, -ible | capable of | readable, visible |
4. Idioms and phrasal verbs
Idioms have meanings different from their individual words.
Idiom | Meaning |
|---|---|
a blessing in disguise | something that seems bad but turns out good |
to burn the midnight oil | to work or study late into the night |
to hit the nail on the head | to describe exactly what is right |
once in a blue moon | very rarely |
to turn over a new leaf | to change one's behaviour for the better |
the tip of the iceberg | a small visible part of a much bigger problem |
to bite off more than one can chew | to take on more than one can manage |
to beat around the bush | to avoid the main point |
Phrasal verbs combine a verb with a particle:
Phrasal verb | Meaning |
|---|---|
put off | postpone |
bring up | raise a child; mention a topic |
call off | cancel |
look into | investigate |
give in | surrender, yield |
carry out | perform, complete |
come across | find by chance |
turn down | reject |
make up for | compensate |
Formal writing often prefers single words: postpone rather than put off, investigate rather than look into.
5. Collocations
Collocations are words that naturally go together. Native-sounding writing depends on them.
make a decision, a mistake, progress, an effort
do homework, a favour, research, business
heavy rain, traffic; strong coffee, wind; high temperature
take a break, a chance, responsibility
pay attention, a visit, a compliment
commit a crime; raise awareness; deeply concerned; bitterly disappointed
"Do a mistake" and "strong rain" are errors of collocation.
6. One-word substitution
Phrase | One word |
|---|---|
A person who can speak two languages | bilingual |
A speech made without preparation | extempore |
One who looks on the bright side | optimist |
That which cannot be read | illegible |
A person who loves books | bibliophile |
Government by the people | democracy |
A list of items to be discussed at a meeting | agenda |
Fit to be eaten | edible |
A person who doesn't believe in God | atheist |
Something that can't be avoided | inevitable |
7. Commonly confused words
Pair | Difference |
|---|---|
affect / effect | affect is usually a verb (to influence); effect is usually a noun (result) |
principle / principal | principle = a basic rule; principal = head of a school, or main |
stationary / stationery | stationary = not moving; stationery = writing materials |
complement / compliment | complement = complete or go well with; compliment = praise |
advice / advise | advice = noun; advise = verb |
lose / loose | lose = misplace or fail to win; loose = not tight |
eminent / imminent | eminent = famous; imminent = about to happen |
council / counsel | council = an administrative body; counsel = advice, or to advise |
8. Register, redundancy and clichés
Formal register suits letters to officials, reports, notices and articles: avoid contractions (don't → do not), slang and texting language.
Informal register suits letters to friends and diary entries.
Redundancy means using unnecessary words: return back → return; revert back → revert; the reason is because → the reason is that; each and every → every; free gift → gift.
Clichés are overused phrases (in this day and age, at the end of the day); replace them with precise words.
A reliable routine for vocabulary questions
Read the whole sentence before choosing.
Use context clues, then test your choice by substitution.
Check connotation (positive or negative) and intensity.
Break unfamiliar words into prefix, root and suffix.
In writing, choose the precise, formal word and cut redundancy.
Connections that matter
Unseen reading includes vocabulary-in-context questions.
Functional writing needs formal register.
Grammar and sentence craft covers prepositions used in collocations.
Common mistakes
Choosing a synonym with the wrong connotation (calling a careful saver "stingy").
Mixing up affect/effect, principle/principal and stationary/stationery.
Wrong collocations such as "do a mistake" or "strong rain".
Redundant phrases such as "return back".
Using informal words in formal letters.
Revision checklist
I can work out meanings from context clues.
I can choose synonyms by shade of meaning and identify antonyms.
I can decode words using prefixes, suffixes and roots.
I can use common idioms, phrasal verbs and collocations.
I can use one-word substitutions.
I can distinguish confused words and write in the right register.