One word substitution is also known as single word for expression. The curriculum of section officer in Nepal assure the total of 7 marks from vocabulary section. One of the main vocab item is One word substitution.

List of One Word Substitution

PHRASE	ONE WORD
One who is not sure about God’s existence	Agnostic
A person who deliberately sets fire to a building	Arsonist
One who does a thing for pleasure and not as a profession	Amateur
One who can use either hand with ease	Ambidextrous
One who makes an official examination of accounts	Auditor
A person who believes in or tries to bring about a state of lawlessness	Anarchist
A person who has changed his faith	Apostate
One who does not believe in the existence of God	Atheist
A person appointed by two parties to solve a dispute	Arbitrator
One who leads an austere life	Ascetic
One who does a thing for pleasure and not as a profession	Amateur
One who can either hand with ease	Ambidextrous
An unconventional style of living	Bohemian
One who is bad in spellings	Cacographer
One who feeds on human flesh	Cannibal
A person who is blindly devoted to an idea/ A person displaying aggressive or exaggerated patriotism	Chauvinist
A critical judge of any art and craft	Connoisseur
Persons living at the same time	Contemporaries
One who is recovering health after illness	Convalescent
A girl/woman who flirts with man	Coquette
A person who regards the whole world as his country	Cosmopolitan
One who is a centre of attraction	Cynosure
One who sneers at the beliefs of others	Cynic
A leader or orator who espoused the cause of the common people	Demagogue
A person having a sophisticated charm	Debonair
A leader who sways his followers by his oratory	Demagogue
A dabbler (not serious) in art, science and literature	Dilettante
One who is for pleasure of eating and drinking	Epicure
One who often talks of his achievements	Egotist
Someone who leaves one country to settle in another	Emigrant
A man who is womanish in his habits	Effeminate
One hard to please (very selective in his habits)	Fastidious
One who runs away from justice	Fugitive
One who is filled with excessive enthusiasm in religious matters	Fanatic
One who believes in fate	Fatalist
A lover of good food	Gourmand
Conferred as an honour	Honorary
A person who acts against religion	Heretic
A person of intellectual or erudite tastes	Highbrow
A patient with imaginary symptoms and ailments	Hypochondriac
A person who is controlled by wife	Henpeck
One who shows sustained enthusiastic action with unflagging vitality	Indefatigable
Someone who attacks cherished ideas or traditional institutions	Iconoclast
One who does not express himself freely	Introvert
Who behaves without moral principles	Immoral
A person who is incapable of being tampered with	Impregnable
One who is unable to pay his debts	Insolvent
A person who is mentally ill	Lunatic
A person who dislikes humankind and avoids human society	Misanthrope
A person who primarily concerned with making money at the expense of ethics	Mercenary
Someone in love with himself	Narcissist
One who collect coins as hobby	Numismatist
A person who likes or admires women	Philogynist
A lover of mankind	Philanthropist
A person who speaks more than one language	Polyglot
One who lives in solitude	Recluse
Someone who walks in sleep	Somnambulist
A person who is indifferent to the pains and pleasures of life	Stoic
A scolding nagging bad-tempered woman	Termagant
A person who shows a great or excessive fondness for one’s wife	Uxorious
One who possesses outstanding technical ability in a particular art or field	Virtuoso

PHRASE	ONE WORD
A group of guns or missile launchers operated together at one place	Battery
A large bundle bound for storage or transport	Bale
A large gathering of people of a particular type	Bevy
An arrangement of flowers that is usually given as a present	Bouquet
A family of young animals	Brood
A group of things that have been hidden in a secret place	Cache
A group of people, typically with vehicles or animals travelling together	Caravan
A closed political meeting	Caucus
An exclusive circle of people with a common purpose	Clique
A group of followers hired to applaud at a performance	Claque
A series of stars	Constellation
A funeral procession	Cortege
A group of worshippers	Congregation
A herd or flock of animals being driven in a body	Drove
A small fleet of ships or boats	Flotilla
A small growth of trees without underbrush	Grove
A community of people smaller than a village	Hamlet
A group of cattle or sheep or other domestic mammals	Herd
A large group of people	Horde
A temporary police force	Posse
A large number of fish swimming together	Shoal
A strong and fast-moving stream of water or other liquid	Torrent

PHRASE	ONE WORD
The medieval forerunner of chemistry	Alchemy
A person who presents a radio/television programme	Anchor
One who studies the evolution of mankind	Anthropologist
A person who is trained to travel in a spacecraft	Astronaut
The scientific study of the physiology, structure, genetics, ecology, distribution, classification, and economic importance of plants	Botany
A person who draws or produces maps	Cartographer
A person who writes beautiful writing	Calligrapher
A person who composes the sequence of steps and moves for a performance of dance	Choreographer
A person employed to drive a private or hired car	Chauffeur
A person who introduces the performers or contestants in a variety show	Compere
A keeper or custodian of a museum or other collection	Curator
The branch of biology concerned with cyclical physiological phenomena	Chronobiology
A secret or disguised way of writing	Cypher
The study of statistics	Demography
The use of the fingers and hands to communicate and convey ideas	Dactylology
A person who sells and arranges cut flowers	Florist
A line of descent traced continuously from an ancestor	Genealogy
The therapeutic use of sunlight	Heliotherapy
The art or practice of garden cultivation and management	Horticulture
One who supervises in the examination hall	Invigilator
The theory or philosophy of law	Jurisprudence
A person who compiles dictionaries	Lexicographer
The scientific study of the structure and diseases of teeth	Odontology
One who presents a radio programme	Radio Jockey
The art of effective or persuasive speaking or writing	Rhetoric
The branch of science concerned with the origin, structure, and composition of rocks	Petrology
One who study the elections and trends in voting	Psephologist
An artist who makes sculptures.	Sculptor
The scientific study of the behaviour, structure, physiology, classification, and distribution of animals	Zoology

PHRASE	ONE WORD
A collection of historical documents or records providing information about a place, institution, or group of people	Archives
A large cage, building, or enclosure for keeping birds in	Aviary
A building where animals are butchered	Abattoir
A place where bees are kept; a collection of beehives	Apiary
A building containing tanks of live fish of different species	Aquarium
A place or scene of activity, debate, or conflict	Arena
A collection of weapons and military equipment	Arsenal
An institution for the care of people who are mentally ill	Asylum
A hole or tunnel dug by a small animal, especially a rabbit, as a dwelling	Burrow
A collection of items of the same type stored in a hidden or inaccessible place	Cache
A public room or building where gambling games are played	Casino
A large burial ground, especially one not in a churchyard	Cemetery
A room in a public building where outdoor clothes or luggage may be left	Cloakroom
A place where a dead person’s body is cremated	Crematorium
a Christian community of nuns living together under monastic vows	Convent
Nursery where babies and young children are cared for during the working day	Creche
A stoppered glass container into which wine or spirit is decanted	Decanter
A large bedroom for a number of people in a school or institution	Dormitory
The nest of a squirrel, typically in the form of a mass of twigs in a tree	Drey
A room or building equipped for gymnastics, games, and other physical exercise	Gymnasium
A storehouse for threshed grain	Granary
A large building with an extensive floor area, typically for housing aircraft.	Hangar
A box or cage, typically with a wire mesh front, for keeping rabbits or other small domesticated animals	Hutch
A place in a large institution for the care of those who are ill	Infirmary
A small shelter for a dog	Kennel
A place where wild animal live	Lair
A place where coins, medals, or tokens are made	Mint
A collection of wild animals kept in captivity for exhibition	Menagerie
A building or buildings occupied by a community of monks living under religious vows	Monastery
A place where bodies are kept for identification	Morgue
A piece of enclosed land planted with fruit trees	Orchard
A large natural or artificial lake used as a source of water supply	Reservoir
A small kitchen or room at the back of a house used for washing dishes and another dirty household work	Scullery
A close-fitting cover for the blade of a knife or sword	Sheath
A room or building for sick children in a boarding school	Sanatorium
A place where animal hides are tanned	Tannery
A large, tall cupboard in which clothes may be hung or stored	Wardrobe