One-Word Substitution (Part-I)

1. Obituary
Definition: A notice of someones death or life of someone after his/her death in newspaper.
2. Isthmus
Definition: A narrow stretch of land connecting two large bodies of land.
3. Elegy
Definition: A mournful poem or a song.
4. Euphemism
Definition: A mild or indirect expression substituted for an offensive or harsh one.
5. Infallible
Definition: A method which never fails.
6. Eccentric
Definition: A man with abnormal habits.
7. Extravagant
Definition: A man who waste his money on luxury.
8. Connoisseur
Definition: A man who knows a lot about things like food, music art.
9. Licentious
Definition: A man of lax moral.
10. Waybill
Definition: A list of passengers and luggage.
11. Catalogue
Definition: A list of books available in a library.
12. Bibliography
Definition: A list of books and writings of one author or one subject.
13. Dormitory
Definition: A large sleeping-room with many beds.
14. Wag
Definition: A jocular person who is full of amusing anecdotes.
15. Downpour
Definition: A heavy continuous fall of rain.
16. Finger-post
Definition: A guide-post pointing out the way for a place.
17. Triumvirate
Definition: A group of three powerful people.
18. Bevy
Definition: A group of girls.
19. Bureaucracy
Definition: A government by officials.
20. Octagon
Definition: A geometrical figure with eight sides.
21. Amnesty
Definition: A general pardon of offenders.
22. Quadruped
Definition: A four footed animal.
23. Geo-stationary
Definition: A fixed orbit in space in relation to earth.
24. Alumnus
Definition: A former student of a school, college or university.
25. Transparency 
Definition: A drawing on transparent paper.
26. Masque
Definition: A dramatic performance.
27. Paediatrician
Definition: A doctor who treats children
28. Ophtalmologist
Definition: A doctor who specializes in the disease of the eyes.
29. Contagious
Definition: A disease which spread by direct contact.
30. Epidemic
Definition: A disease that effects a large number of people in an area at the same time.
31. Hutch 
Definition: A den for small animals.
32. Wreath
Definition: A decorative ring of flowers and leaves.
33. Coffle
Definition: A collection of slaves
34. Posthumous
Definition: A child born after death of his father.
35. Auditorium
Definition: A building where an audience sits.
36. Hangar
Definition: A building in which aircraft are housed.
37. Boulevard
Definition: A broad road bordered with trees.
38. Sojourn
Definition: A brief or a short stay at a place.
39. Jury
Definition: A body of persons appointed to hear evidence or judge and give their decision.
40. Tandem
Definition: A bicycle for two or more people.