One Word Substitution

Irreparable- Incapable of being repaired
Irrevocable- That which cannot be altered
Itinerant- One who travels from place to place
Juxtapose- Placing a thing beside another
Lagoon- Salt water lake separated from the sea by sand banks
Lexicographer- One who compiles a dictionary
Maidenhood- The state of being unmarried (of a girl)
Mariticide- Murder of one's husband
Martyr- One who dies for a noble cause
Materialist- A person for whom money is the most important prayer
Matins- Morning Prayer
Matricide- Killing of one's Mother
Maxim- A short statement of a general truth
Mercenary- One who acts only for money
Meticulous- Very particular about small details
Metamorphosis-complete change in appearance
Misandrist- One who hates male
Misanthropist- A hater of mankind
Misogamist- Hater of marriage
Misologist - Hater of learning
Misogynist- Hater of Womankind
Episodic- Happening only some times and irregulary
Epistle- A letter
Epitaph- Words which are inscribed on the grave
Epithet- Adjective added to a person's name usually to criticise or praise him
Epitome- a perfect example
Equanimity- Calmness of mind and temper.
Erudite- A learned or scholarly person
Espionage- Practise of spying
Etymology- The science which deals with derivation of words
Euphemism- Bombastic style of writing
Euphonious- Sounding Pleasant
Euphoria- A strong feeling of happiness
Evanescent- Of a very short duration or period / Ephemeral/ Transient
Explicable- That which can be explained
Extempore- A speech delivered without any preparation / Impromtu
Fallacy- False or mistaken belief
Fanatic- One who is filled with excessive and mistaken enthusiasm.
Fastidious- One who is hard to please
Fatalist- One who believes in destiny
Fauna- Animals of a certain region.
Fauna- Animals of a certain region
Feminist- One who works for the welfare of women
Fiasco- Complete failure
Flagstaff- A longe pole on which a flag is flown
Flora- all the plants of a particular area or period of time
Idolatry- The worship of idols or images
Illicit- A trade or act prohibited by law
Impalpable- Incapable of being perceived by touch
Imperialism- Policy of extending a country's empire and influence
Imponderable- That which cannot be gussed or calculated
Imposter- One who assumes a character or title not his own to deceive others
Impregnable- That which cannot be taken by force of arms.
Impudent- Rude and not respectful.
Impunity- Freedom from punishment
Inaccessible- Incapable of being reached
Inaudible- A sound that cannot be heard
Incombustible- That which cannot be burnt
Incomparable- That which cannot be compared
Fluke- Stroke of good luck
Forgery- Counterfeiting of document
Fratricide- Killing of one's brother
Frenzy- A state of extreme excitement
Gastronomy- Science and art of preparing and appreciating good food.
Geology- The science of earth's history and rocks
Gobble- Eat fast, noisly and greedily
Gregarious- Animals that live in flocks
Hallucinogen- A drug that causes one to hallucinate
Hedonism- Belief that the most important thing in the world is pleasure.
Henchman- Faithful supporter
Heterogeneous- Things which contain elements of different nature
Holocaust- Large scale destruction by fire
Homogeneous- Things which contain elements of the same nature
Honorary- A post for which no salary is paid
Hospitable- Fond of entertaining guests
Hypochondria- Imaginary ailments
Iconoclast- One who opposes established institutions or beliefs