BUILDING A GOOD VOCABULARY
Antonyms and Synonyms, Prefixes and Suffixes, Collocations and One-Word Substitution
Important Exam Notes in Simple Language
1. Introduction
Vocabulary means the collection of words that a person knows and uses in a language.
A good vocabulary helps us:
→ express ideas clearly
→ understand texts easily
→ speak confidently
→ write effectively
→ improve reading and comprehension
→ choose the right word for the right situation
→ perform better in examinations
Vocabulary can be developed through:
→ Reading books, newspapers and articles
→ Learning synonyms and antonyms
→ Understanding prefixes and suffixes
→ Learning common collocations
→ Learning one-word substitutions
→ Using new words in sentences
→ Regular revision and practice
Easy Formula:
→ Good Vocabulary = Meaning + Usage + Practice + Revision
2. Synonyms
Meaning
Synonyms are words that have the same or nearly the same meaning as another word.
Examples:
→ Big – Large
→ Small – Little
→ Happy – Joyful
→ Begin – Start
→ End – Finish
→ Intelligent – Clever
→ Beautiful – Attractive
→ Fast – Quick
Important Point
Synonyms are not always exactly interchangeable. The correct choice depends on context, meaning and level of formality.
Common Synonyms
→ Abandon – Leave
→ Accurate – Correct
→ Brave – Courageous
→ Calm – Peaceful
→ Difficult – Hard
→ Famous – Well-known
→ Help – Assist
→ Honest – Truthful
→ Important – Significant
→ Job – Occupation
→ Lazy – Idle
→ Mistake – Error
→ Rapid – Fast
→ Rich – Wealthy
→ Silent – Quiet
→ Strong – Powerful
→ Weak – Feeble
→ Wise – Sensible
Exam Definition
Synonyms are words having the same or nearly the same meaning.
3. Antonyms
Meaning
Antonyms are words that have opposite or contrasting meanings.
Examples:
→ Hot – Cold
→ Big – Small
→ Good – Bad
→ Happy – Sad
→ Rich – Poor
→ Early – Late
→ Strong – Weak
→ Easy – Difficult
Common Antonyms
→ Accept – Reject
→ Ancient – Modern
→ Arrival – Departure
→ Beautiful – Ugly
→ Brave – Cowardly
→ Create – Destroy
→ Expand – Contract
→ Friend – Enemy
→ Honest – Dishonest
→ Increase – Decrease
→ Knowledge – Ignorance
→ Maximum – Minimum
→ Permanent – Temporary
→ Possible – Impossible
→ Success – Failure
→ Victory – Defeat
Exam Definition
Antonyms are words that have opposite or contrasting meanings.
4. Synonyms vs Antonyms
Synonyms
→ Similar meaning
→ Example: Happy – Joyful
Antonyms
→ Opposite meaning
→ Example: Happy – Sad
Easy formula:
→ Synonym = Same/Similar
→ Antonym = Opposite
5. Prefixes
Meaning
A prefix is a letter or group of letters added to the beginning of a word to change or modify its meaning.
Prefix + Root Word = New Word
Examples
→ un + happy = unhappy
→ dis + honest = dishonest
→ re + write = rewrite
→ im + possible = impossible
→ pre + school = preschool
Common Prefixes
1. un-
Meaning: not / opposite of
→ happy → unhappy
→ kind → unkind
→ known → unknown
2. dis-
Meaning: not / opposite / reversal
→ honest → dishonest
→ agree → disagree
→ appear → disappear
3. in-
Meaning: not
→ correct → incorrect
→ complete → incomplete
→ active → inactive
4. im-
Often used before words beginning with m or p.
→ possible → impossible
→ patient → impatient
→ mature → immature
5. il-
Often used before words beginning with l.
→ legal → illegal
→ logical → illogical
6. ir-
Often used before words beginning with r.
→ regular → irregular
→ responsible → irresponsible
7. re-
Meaning: again / back
→ write → rewrite
→ read → reread
→ build → rebuild
8. pre-
Meaning: before
→ school → preschool
→ view → preview
→ history → prehistory
9. mis-
Meaning: wrongly / badly
→ understand → misunderstand
→ behave → misbehave
→ spell → misspell
10. over-
Meaning: too much / above
→ cook → overcook
→ work → overwork
→ confident → overconfident
11. under-
Meaning: below / insufficiently
→ ground → underground
→ paid → underpaid
→ developed → underdeveloped
6. Suffixes
Meaning
A suffix is a letter or group of letters added to the end of a word.
A suffix can change:
→ the meaning of a word
→ its grammatical form
→ its part of speech
Examples
→ teach + er = teacher
→ happy + ness = happiness
→ care + ful = careful
→ hope + less = hopeless
→ quick + ly = quickly
7. Common Suffixes
1. -er
Often indicates a person who performs an action.
→ teach → teacher
→ work → worker
→ drive → driver
2. -ness
Forms nouns expressing a state or quality.
→ happy → happiness
→ kind → kindness
→ dark → darkness
3. -ful
Means full of.
→ care → careful
→ beauty → beautiful
→ hope → hopeful
4. -less
Means without.
→ hope → hopeless
→ care → careless
→ use → useless
5. -ly
Often forms adverbs from adjectives.
→ quick → quickly
→ slow → slowly
→ careful → carefully
6. -ment
Often forms nouns.
→ develop → development
→ govern → government
→ achieve → achievement
7. -tion / -sion
Often forms nouns.
→ educate → education
→ decide → decision
→ discuss → discussion
8. -able
Often means capable of being.
→ read → readable
→ understand → understandable
→ comfort → comfortable
9. -ous
Often forms adjectives.
→ danger → dangerous
→ fame → famous
→ courage → courageous
8. Prefix vs Suffix
Prefix
→ Added to the beginning of a word.
→ unhappy
→ rewrite
→ impossible
Suffix
→ Added to the end of a word.
→ happiness
→ teacher
→ carefully
Easy formula:
→ Prefix = Before the word
→ Suffix = After the word
9. Word Formation
Prefixes and suffixes help us form new words.
Example:
→ happy
→ unhappy
→ happiness
→ happily
This is called word formation.
Another example:
→ care
→ careful
→ careless
→ carefully
→ carelessness
Learning word families is an effective way to expand vocabulary.
10. Collocations
Meaning
A collocation is a combination of words that commonly occur together in natural English.
For example:
→ make a decision
We normally say make a decision, not do a decision.
Another example:
→ heavy rain
We normally say heavy rain, not strong rain.
Importance of Collocations
Learning collocations helps us:
→ speak naturally
→ write naturally
→ choose appropriate words
→ avoid common language errors
→ improve fluency
11. Common Collocations
Make
→ make a decision
→ make a mistake
→ make a promise
→ make an effort
→ make progress
→ make a plan
Do
→ do homework
→ do business
→ do exercise
→ do work
→ do research
Have
→ have breakfast
→ have a discussion
→ have a good time
→ have a problem
→ have an opportunity
Take
→ take a break
→ take a decision
→ take responsibility
→ take action
→ take notes
Give
→ give advice
→ give a speech
→ give an answer
→ give permission
→ give an example
Pay
→ pay attention
→ pay a bill
→ pay respect
→ pay a visit
Save
→ save time
→ save money
→ save energy
Catch
→ catch a bus
→ catch a train
→ catch a cold
→ catch someone's attention
12. Adjective + Noun Collocations
Common examples:
→ heavy rain
→ strong wind
→ strong tea
→ deep sleep
→ bright future
→ high temperature
→ heavy traffic
→ fast food
→ close friend
→ serious problem
13. Verb + Noun Collocations
→ make a decision
→ make a mistake
→ commit a crime
→ deliver a speech
→ solve a problem
→ raise a question
→ reach a conclusion
→ achieve a goal
→ gain experience
→ earn money
14. Adverb + Adjective Collocations
→ deeply concerned
→ highly successful
→ completely different
→ extremely important
→ absolutely necessary
→ seriously injured
15. One-Word Substitution
Meaning
One-word substitution means using one word instead of a group of words while keeping the same meaning.
It is especially important in competitive examinations.
Examples
→ One who cannot read or write → Illiterate
→ One who loves mankind → Philanthropist
→ One who hates mankind → Misanthrope
→ One who loves books → Bibliophile
→ One who speaks many languages → Polyglot
→ One who knows everything → Omniscient
→ One who knows everything about a particular subject → Expert
→ One who does not believe in God → Atheist
→ One who believes in God → Theist
16. Important One-Word Substitutions: People
→ One who writes books → Author
→ One who writes poems → Poet
→ One who writes plays → Playwright
→ One who studies languages → Linguist
→ One who studies society → Sociologist
→ One who studies the human mind → Psychologist
→ One who studies plants → Botanist
→ One who studies animals → Zoologist
→ One who studies stars and planets → Astronomer
→ One who travels from place to place → Itinerant
→ One who walks in sleep → Somnambulist
→ One who talks too much → Garrulous person
→ One who talks very little → Taciturn
→ One who spends too much → Spendthrift
→ One who hates spending money → Miser
17. One-Word Substitutions: Places
→ A place where books are kept → Library
→ A place where animals are kept → Zoo
→ A place where birds are kept → Aviary
→ A place where weapons are stored → Arsenal
→ A place where aircraft are kept → Hangar
→ A place where dead bodies are kept → Morgue
→ A place where coins are made → Mint
→ A place where soldiers live → Barracks
→ A place where monks live → Monastery
→ A place where nuns live → Convent
18. One-Word Substitutions: Government and Society
→ Government by the people → Democracy
→ Government by a king or queen → Monarchy
→ Government by a small group → Oligarchy
→ Government by one person → Autocracy
→ Government by religious leaders → Theocracy
→ Absence of government → Anarchy
→ Love for one's country → Patriotism
→ One who loves his country → Patriot
→ One who betrays his country → Traitor
19. One-Word Substitutions: Time and Events
→ Happening every day → Daily
→ Happening every week → Weekly
→ Happening every month → Monthly
→ Happening every year → Annual
→ Happening once in two years → Biennial
→ Happening twice a year → Biannual
→ Happening at the same time → Simultaneous
→ A period of one hundred years → Century
→ A period of one thousand years → Millennium
20. One-Word Substitutions: Qualities and Situations
→ That which cannot be avoided → Inevitable
→ That which cannot be believed → Incredible
→ That which cannot be seen → Invisible
→ That which cannot be heard → Inaudible
→ That which cannot be understood → Incomprehensible
→ That which cannot be defeated → Invincible
→ That which cannot be destroyed → Indestructible
→ That which cannot be corrected → Irremediable
→ That which cannot be cured → Incurable
→ That which cannot be explained → Inexplicable
21. Vocabulary Through Word Families
Learning a single word can help us learn several related words.
Example: BEAUTY
→ beauty – noun
→ beautiful – adjective
→ beautifully – adverb
→ beautify – verb
Example: EDUCATE
→ educate – verb
→ education – noun
→ educational – adjective
→ educator – noun
Example: SUCCESS
→ succeed – verb
→ success – noun
→ successful – adjective
→ successfully – adverb
This method helps students build vocabulary systematically.
22. Context Is Important
A word can have different meanings in different contexts.
Example:
Bank
→ financial institution
→ side of a river
Therefore, students should learn vocabulary in sentences, not only as isolated words.
Example:
→ The bank is closed today.
→ We sat on the river bank.
23. How to Improve Vocabulary
Reading
→ Read newspapers.
→ Read short stories.
→ Read novels.
→ Read academic texts.
→ Read essays and articles.
Note-Making
Maintain a vocabulary notebook:
→ New word
→ Meaning
→ Synonym
→ Antonym
→ Word family
→ Example sentence
Practice
→ Use new words in sentences.
→ Learn collocations.
→ Revise regularly.
→ Solve vocabulary-based MCQs.
→ Practise one-word substitutions.
24. Common Vocabulary Mistakes
Avoid:
→ using a word without knowing its exact meaning
→ confusing similar words
→ translating directly from the mother tongue
→ using incorrect collocations
→ overusing difficult words
→ learning words without examples
→ confusing prefixes and suffixes
25. Important Exam Questions
Q1. What is vocabulary?
→ Vocabulary is the collection of words known and used by a person or language.
Q2. What are synonyms?
→ Words having the same or nearly the same meaning.
Q3. What are antonyms?
→ Words having opposite or contrasting meanings.
Q4. What is a prefix?
→ A letter or group of letters added to the beginning of a word.
Q5. What is a suffix?
→ A letter or group of letters added to the end of a word.
Q6. What is a collocation?
→ A combination of words that commonly occur together in natural language.
Q7. What is one-word substitution?
→ Replacing a group of words with one word having the same or similar meaning.
Q8. What is the prefix in “unhappy”?
→ un-
Q9. What is the suffix in “happiness”?
→ -ness
Q10. Give a synonym of “rapid.”
→ Fast / Quick
Q11. Give an antonym of “ancient.”
→ Modern
Q12. What is the one-word substitution for “one who loves books”?
→ Bibliophile
26. Quick Revision Formula
→ Synonym = Similar meaning
→ Antonym = Opposite meaning
→ Prefix = Added at the beginning
→ Suffix = Added at the end
→ Collocation = Words commonly used together
→ One-word substitution = One word for a group of words
→ Vocabulary = Knowledge and use of words
Final Exam Formula
Build Vocabulary → Learn Synonyms + Antonyms + Prefixes + Suffixes + Collocations + One-Word Substitutions + Word Families + Context + Regular Practice
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