AFCAT English Complete Notes 2026 PDF: Grammar, Vocabulary, Idioms, One Word, Synonyms & Previous Year MCQs

AFCAT English Complete Notes

High Frequency Vocabulary 

Word	Meaning	Memory Trick
Abridge	Shorten	Short version
Abandon	Leave	Give up
Obdurate	Stubborn	Doesn't change
Resilient	Recovers quickly	Bounce back
Ubiquitous	Present everywhere	Everywhere
Ephemeral	Short-lived	Temporary
Pragmatic	Practical	Reality based
Magnanimous	Generous	Big-hearted
Fastidious	Very careful	Perfectionist
Pernicious	Harmful	Dangerous
Belligerent	Aggressive	Likes fighting
Gregarious	Sociable	Loves groups
Taciturn	Quiet	Speaks less
Loquacious	Talkative	Speaks a lot
Garrulous	Excessively talkative	Non-stop talking
Laconic	Uses very few words	Short replies
Esoteric	Understood by few	Secret knowledge
Parsimonious	Miserly	Doesn't spend
Recalcitrant	Disobedient	Doesn't obey
Altruist	Selfless person	Helps others
Sycophant	Flatterer	Chamcha
Maverick	Independent thinker	Doesn't follow others
Ambidextrous	Uses both hands	Ambi = Both
Hedonist	Pleasure seeker	Enjoyment first
Philanthropist	Loves mankind	Helps humanity
Misanthrope	Hates mankind	Opposite of philanthropist
Sporadic	Occasional	Sometimes
Cajole	Persuade by flattery	Buttering
Impeccable	Faultless	Perfect
Austere	Strict & simple	No luxury
Meticulous	Extremely careful	Detail oriented
Verbose	Talkative	Too many words
Concise	Short & clear	Brief
Hostile	Unfriendly	Enemy-like
Benevolent	Kind	Good-hearted
Malevolent	Evil	Bad-hearted
Diligent	Hardworking	Sincere worker
Frugal	Economical	Saves money
Extravagant	Wasteful	Spends money
Obsolete	Outdated	Old

High Frequency Synonym Pairs

Word	Synonym
Diligent	Hardworking
Prudent	Wise
Resilient	Flexible
Magnanimous	Generous
Pragmatic	Practical
Fastidious	Careful
Taciturn	Reserved
Loquacious	Talkative
Cajole	Persuade
Obdurate	Stubborn
Austere	Strict
Sporadic	Occasional

High Frequency Antonym Pairs

Word	Opposite
Scarce	Abundant
Hostile	Friendly
Benevolent	Malevolent
Frugal	Extravagant
Taciturn	Loquacious
Verbose	Concise
Permanent	Ephemeral
Obsolete	Modern
Honest	Dishonest
Impeccable	Defective

One Word Substitution

Meaning	Word
Speaks many languages	Polyglot
Uses both hands equally	Ambidextrous
Knows everything	Omniscient
Present everywhere	Omnipresent
All powerful	Omnipotent
Loves mankind	Philanthropist
Hates mankind	Misanthrope
Pleasure seeker	Hedonist
Studies birds	Ornithologist
Cannot read/write	Illiterate
Sleepwalker	Somnambulist
Positive thinker	Optimist

Idioms & Phrases

Idiom	Meaning
Hit the nail on the head	Exactly right
Once in a blue moon	Rarely
Spill the beans	Reveal secret
Throw in the towel	Admit defeat
Beat around the bush	Avoid main point
Burn the midnight oil	Study/work late
Blessing in disguise	Hidden advantage
Bite off more than you can chew	Take more than you can handle
Steal someone's thunder	Take credit for someone else's idea

Fixed Prepositions 

Word	Preposition
Good	at
Bad	at
Clever	at
Interested	in
Succeed	in
Expert	in
Skilled	in
Competent	in
Proficient	in
Believe	in
Deal	with
Angry	with (person)
Angry	at (thing)
Different	from
Married	to
Related	to
Junior	to
Senior	to
Superior	to
Preferable	to
Prefer	to
Addicted	to
Accustomed	to
Famous	for
Responsible	for
Suitable	for
Appreciate	for
Respect	for
Sympathy	for
Affection	for
Afraid	of
Proud	of
Capable	of
Full	of
Fond	of
Tired	of
Consist	of
Insist	on
Depend	on
Rely	on
Focus	on
Abstain	from
Prevent	from

Common Confusing Words

Wrong	Correct
Senior than	Senior to
Junior than	Junior to
Prefer than	Prefer to
Married with	Married to
Different than	Different from
Discuss about	Discuss
Return back	Return
Repeat again	Repeat

20 Golden Grammar Rules

• Each → Singular
• Every → Singular
• Either → Singular
• Neither → Singular
• Police → Plural
• Furniture → Singular
• Information → Singular
• News → Singular
• The number → Singular
• A number → Plural
• No sooner → Than
• Hardly → When
• Scarcely → When
• Married → To
• Junior → To
• Senior → To
• Competent → In
• Famous → For
• Afraid → Of
• Succeed → In

Most Repeated Idioms & Phrases

Idiom/Phrase	Meaning	Memory Trick
Hit the nail on the head	Say exactly the right thing	Nail = Exact hit
Once in a blue moon	Rarely	Blue moon = Rare
Spill the beans	Reveal a secret	Beans gir gaye = Secret out
Throw in the towel	Admit defeat	Boxing towel = Quit
Burn the midnight oil	Study/work late night	Oil lamp at midnight
Blessing in disguise	Hidden advantage	Hidden blessing
Beat around the bush	Avoid the main point	Bush ke aas-paas ghoomna
Bite off more than you can chew	Take more work than you can handle	Zyada bite
Steal someone's thunder	Take credit for someone else's idea	Credit chura lena
Break the ice	Start a conversation	Ice todna = Start talking
At sixes and sevens	In confusion	Everything scattered
A storm in a teacup	Big issue over a small matter	Choti baat, bada hungama
Barking up the wrong tree	Following the wrong approach	Wrong direction
Call it a day	Stop working	Din khatam
Cry over spilt milk	Regret what cannot be changed	Beeti baat
Under the weather	Feeling ill	Health down
Cost an arm and a leg	Very expensive	Bahut mehenga
On cloud nine	Extremely happy	Sky-high happiness
Piece of cake	Very easy	Easy as cake
Kill two birds with one stone	Two tasks with one effort	One stone, two birds

One Word Substitution

Meaning	One Word	Trick
One who speaks many languages	Polyglot	Poly = Many
One who knows everything	Omniscient	Omni = All
Present everywhere	Omnipresent	Present all places
All powerful	Omnipotent	Power
One who uses both hands	Ambidextrous	Ambi = Both
One who studies birds	Ornithologist	Orni = Bird
One who studies plants	Botanist	Plants
One who studies animals	Zoologist	Animals
One who cannot read/write	Illiterate	Not literate
One who walks in sleep	Somnambulist	Sleepwalker
One who loves mankind	Philanthropist	Loves humanity
One who hates mankind	Misanthrope	Opposite
One who believes in pleasure	Hedonist	Pleasure first
Positive thinker	Optimist	Positive
Negative thinker	Pessimist	Negative
One who talks too much	Loquacious / Garrulous	Non-stop talk
One who speaks very little	Taciturn	Quiet person
One who flatters others	Sycophant	Chamcha

Fixed Prepositions 

Word	Preposition	Example
Good	at	Good at Maths
Clever	at	Clever at solving
Interested	in	Interested in Defence
Succeed	in	Succeed in exam
Skilled	in	Skilled in coding
Expert	in	Expert in English
Competent	in	Competent in management
Believe	in	Believe in yourself
Married	to	Married to her
Related	to	Related to science
Junior	to	Junior to me
Senior	to	Senior to him
Superior	to	Superior to others
Prefer	to	Prefer tea to coffee
Addicted	to	Addicted to games
Accustomed	to	Accustomed to waking early
Famous	for	Famous for food
Responsible	for	Responsible for work
Appreciate	for	Appreciated for honesty
Respect	for	Respect for teachers
Sympathy	for	Sympathy for victims
Affection	for	Affection for parents
Afraid	of	Afraid of dogs
Proud	of	Proud of India
Capable	of	Capable of doing
Fond	of	Fond of music
Full	of	Full of hope
Tired	of	Tired of waiting
Consist	of	Consists of five members
Insist	on	Insist on going
Depend	on	Depend on parents
Focus	on	Focus on studies
Abstain	from	Abstain from smoking
Prevent	from	Prevent from entering

High-Frequency Vocabulary

Word	Meaning	Opposite/Similar
Ubiquitous	Present everywhere	—
Ephemeral	Short-lived	Permanent
Pragmatic	Practical	Idealistic
Magnanimous	Generous	Mean
Fastidious	Very careful	Careless
Obdurate	Stubborn	Flexible
Resilient	Recovers quickly	Fragile
Austere	Strict & simple	Luxurious
Meticulous	Detail-oriented	Careless
Sporadic	Occasional	Regular
Pernicious	Harmful	Beneficial
Belligerent	Aggressive	Peaceful
Gregarious	Sociable	Reserved
Taciturn	Quiet	Loquacious
Loquacious	Talkative	Taciturn
Garrulous	Excessively talkative	Reserved
Laconic	Uses few words	Verbose
Verbose	Wordy	Concise
Concise	Short & clear	Verbose
Esoteric	Understood by few	Common
Parsimonious	Miserly	Generous
Recalcitrant	Disobedient	Obedient
Altruist	Selfless	Selfish
Sycophant	Flatterer	Honest critic
Maverick	Independent thinker	Follower
Cajole	Persuade by flattery	Coerce
Impeccable	Faultless	Defective
Obsolete	Outdated	Modern
Frugal	Economical	Extravagant
Diligent	Hardworking	Lazy
Hostile	Unfriendly	Friendly

Commonly Confused Words

Wrong	Correct
Senior than	Senior to
Junior than	Junior to
Prefer than	Prefer to
Married with	Married to
Different than	Different from
Discuss about	Discuss
Return back	Return
Repeat again	Repeat
More better	Better
More superior	Superior

Vocabulary by Theme

Theme	Words
Talkative	Loquacious, Garrulous, Verbose
Quiet	Taciturn, Laconic
Practical	Pragmatic
Generous	Magnanimous, Altruist
Stubborn	Obdurate, Recalcitrant
Harmful	Pernicious
Friendly	Gregarious
Careful	Fastidious, Meticulous, Diligent
Secret/Special	Esoteric
Temporary	Ephemeral
Everywhere	Ubiquitous
Money Saver	Frugal, Parsimonious
Flattery	Sycophant, Cajole

Commonly Confused Words 

Word 1	Word 2	Difference
Accept	Except	Accept = Receive, Except = Excluding
Affect	Effect	Affect = Verb, Effect = Noun
Advice	Advise	Advice = Noun, Advise = Verb
Stationary	Stationery	Stationary = Not moving, Stationery = Office items
Principal	Principle	Principal = Head of school, Principle = Rule
Compliment	Complement	Compliment = Praise, Complement = Complete
Lose	Loose	Lose = Misplace, Loose = Not tight
Then	Than	Then = Time, Than = Comparison
Beside	Besides	Beside = Next to, Besides = In addition
Farther	Further	Farther = Physical distance, Further = Additional

Foreign Phrases

Phrase	Meaning
Bona fide	Genuine
De facto	In fact
De jure	By law
Status quo	Existing condition
Vice versa	The other way round
Ad hoc	Temporary
Per capita	Per person
Sine die	Without a fixed date
Prima facie	At first sight
Alma mater	Former school/college

Silent Letter Words

Word	Silent Letter
Honest	H
Honour	H
Hour	H
Knife	K
Knee	K
Know	K
Psychology	P
Receipt	P
Debt	B
Doubt	B
Island	S
Castle	T
Listen	T
Fasten	T
Autumn	N

Irregular Verbs

V1	V2	V3
Go	Went	Gone
Begin	Began	Begun
Break	Broke	Broken
Choose	Chose	Chosen
Drink	Drank	Drunk
Drive	Drove	Driven
Fly	Flew	Flown
Forget	Forgot	Forgotten
Speak	Spoke	Spoken
Write	Wrote	Written
Eat	Ate	Eaten
Take	Took	Taken
Give	Gave	Given
See	Saw	Seen
Know	Knew	Known

Frequently Confused Vocabulary

Word	Meaning
Eminent	Famous
Imminent	About to happen
Immanent	Existing within
Historic	Important in history
Historical	Related to history
Economic	Related to economy
Economical	Money-saving
Continual	Repeated with breaks
Continuous	Without stopping
Sensible	Practical
Sensitive	Easily affected

Topic	Remember
No sooner	Than
Hardly	When
Scarcely	When
Married	To
Junior	To
Senior	To
Different	From
Succeed	In
Interested	In
Competent	In
Famous	For
Responsible	For
Afraid	Of
Proud	Of
Insist	On
Depend	On
Abstain	From
Police	Plural
Furniture	Singular
Information	Singular
News	Singular
Each	Singular Verb
Every	Singular Verb
Neither	Singular Verb
The number	Singular Verb
A number	Plural Verb
Scenery	Singular
Advice	Uncountable
Luggage	Uncountable
Knowledge	Uncountable

Singular Words (Always Singular)

Word	Verb
Furniture	is
Information	is
Advice	is
News	is
Luggage	is
Baggage	is
Scenery	is
Poetry	is
Machinery	is
Equipment	is
Knowledge	is
Progress	is
Work (general)	is

Plural Words (Always Plural)

Word	Verb
Police	are
People	are
Cattle	are
Gentry	are
Poultry	are
Rich	are
Poor	are

Common Error List

Wrong	Correct
Return back	Return
Repeat again	Repeat
More better	Better
More superior	Superior
Very unique	Unique
Discuss about	Discuss
Order for	Order
Enter into the room	Enter the room
Reply back	Reply
Revert back	Revert

Nouns Ending in S but Singular

Word	Verb
Mathematics	is
Physics	is
Economics	is
Politics	is
Ethics	is
Measles	is
Statistics (subject)	is

Pair Words

Pair	Rule
Bread & Butter	Singular
Rice & Curry	Singular
Slow and steady	Singular
Time and tide	Plural

Pronoun Rules

Word	Verb
Everyone	Singular
Someone	Singular
Nobody	Singular
Anybody	Singular
Everybody	Singular
Everything	Singular

Common Spellings

Wrong	Correct
Accomodation	Accommodation
Enviroment	Environment
Goverment	Government
Seperate	Separate
Recieve	Receive
Definately	Definitely
Occured	Occurred
Untill	Until
Publically	Publicly
Begining	Beginning

Frequently Asked Prefixes

Prefix	Meaning	Example
Anti	Against	Anti-social
Auto	Self	Autobiography
Bi	Two	Bicycle
Inter	Between	International
Intra	Within	Intranet
Mis	Wrong	Misbehave
Mono	One	Monologue
Multi	Many	Multinational
Neo	New	Neoclassical
Poly	Many	Polyglot
Semi	Half	Semicircle
Uni	One	Uniform

Frequently Asked Suffixes

Suffix	Meaning
-logy	Study
-phobia	Fear
-phile	Lover
-phobe	Hater
-ism	Belief
-ist	Person
-graphy	Writing
-meter	Measure
-scope	Viewing
-cracy	Rule

Root Words

Root	Meaning	Example
Chron	Time	Chronology
Bio	Life	Biology
Geo	Earth	Geography
Tele	Distance	Telephone
Aqua	Water	Aquarium
Astro	Star	Astronomy
Ped	Foot	Pedestrian
Dict	Speak	Dictionary
Scrib	Write	Describe
Spect	Look	Inspect

High-Frequency One-Liners

Rule	Remember
Hardly	When
Scarcely	When
No sooner	Than
Senior	To
Junior	To
Married	To
Different	From
Prefer	To
Famous	For
Succeed	In
Afraid	Of
Capable	Of
Interested	In
Depend	On
Abstain	From

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