One-word Substitution or Answer in one-word

1. The life history of a man written by himself. Autobiography (आत्मकथा)
2. A person who believes that there is no God. Atheist (नास्तिक)
3. A medicine which counteracts the effects of poison. Antidote (जहर मारने की दवा)
4. A person who does something not professionally but for pleasure. Amateur (अव्यवसायी) 
5. That which does not bear the name of the writer. Anonymous (बिना नाम का)
6. Government by a ruler who has unlimited power. Autocracy (एक व्यक्ति का शासन)
7. A diplomatic representative of one country in another. Ambassador (राजदूत)
8. A traveller in space. Astronaut (अंतरिक्ष यात्री)
9. An assembly of listeners. Audience (श्रोतागण)
10. To give up the throne. Abdicate (राज्य त्यागना)
11. A medicine which prevents infection by killing germs. Antiseptic (सड़न रोकने वाली)
12. The science of vegetable life. Botany (वनस्पति-विज्ञान)
13. The science which treats of life. Biology (जीव विज्ञान)
14. Government by officials. Bureaucracy (अफसरशाही)
15. The life history of a man written by someone else. Biography (जीवन कथा)
16. One who has narrow and prejudiced religious views. Bigot (कट्टर)
17. Festival of the hundredth anniversary. Centenary (शताब्दी महोत्सव)
18. The man who eats human flesh. Cannibal (नरभक्षी)
19. Place for burials other than a churchyard. Cemetery (कब्रिस्तान)
20. Place for cremation of dead bodies. Crematorium (शमशान)  
21. A Person who is free from national prejudices. Cosmopolitan (विश्वप्रेमी)
22. People working together in the same office or department. Colleagues (सहकर्मी)
23. Belonging to the same time. Contemporary (समकालीन)
24. Substance designed to make the skin or hair more beautiful. Cosmetics (सौंदर्य प्रसाधन)
25. That can be believed. Credible (विश्वसनीय)
26. The state of remaining unmarried. Celibacy (ब्रह्मचर्य)
27. The artist who draws the comic pictures. Cartoonist (हास्यजनक चित्र बनाने वाला)
28. A government of the people, by the people and for the people. Democracy (प्रजातंत्र)
29. A battle or match in which neither party wins. Drawn (अनिर्णीत) 
30. Want of rain. Drought (सूखा)
31. A disease that spreads over a large area. Epidemic (महामारी)
32. Articles sent from one country to another. Export (निर्यात)
33. That which is fit to be eaten. Edible (खाने योग्य)
34. A selfish person who always thinks of himself. Egoist (अहंवादी)
35. Fit to be chosen. Eligible (योग्य)
36. A person who leaves his own country and goes to live in another. Emigrant (प्रवासी)
37. A speech delivered without previous preparation. Extempore (बिना तैयारी के)
38. Words inscribed on graves. Epitaph (कब्र पर अंकित शब्द)
39. One who believes in fate. Fatalist (भाग्यवादी)
40. That which may cause death. Fatal (घातक)
41. A man residing in a country of which he is not a citizen. Foreigner (विदेशी)
42. A medicine that kills germs.  Germicide (कीटनाशक)
43. A person who eats too much. Glutton (पेटू)
44. An office for which no salary is paid. Honorary (अवैतनिक)
45. Killing of a human being specially by another. Homicide (नर-हत्या)
46. That which cannot be read. illegible (अपठनीय)
47. A person who comes to one country from another in order to settle there. Immigrant (आवासी)
48. That which cannot be heard. Inaudible (जिसे सुना न जा सके)
49. That which is difficult to believe. Incredible (जिसका विश्वास न किया जा सके)
50. That which cannot be conquered. Invincible (अजेय)
51. One who can neither read nor write. Illiterate (अनपढ़)  
52. That which cannot be imitated. Inimitable (जिसे नक़ल न कर सके) 
53. That which cannot be corrected. Incorrigible (जिसे ठीक न किया जा सके)
54. The killing of a new born baby or child. Infanticide (बाल हत्या)
55. That which cannot be repaired. Irreparable (जिसे सुधारा न जा सके)
56. That which cannot be removed. Indelible (अमिट)
57. Person unable to pay debts. Insolvent (दिवालिया)
58. That which cannot be reached. Inaccessible (पहुँच से बाहर)
59. That which is contrary to law. Illegal (अवैध)
60. Capable of catching fire easily. Inflammable (जल्दी आग पकड़ने वाला) 
61. One who lacks knowledge or awareness. Ignorant  (अज्ञानी)
62. One who knows many languages. Linguist (कई भाषाए जानने वाला)
63. Room or building used for scientific experiments. Laboratory (प्रयोगशाला)
64. Matter which is hand written. Manuscript (हस्तलिपि)
65. Person who is caused to suffer for a great cause. Martyr (शहीद) 
66. A person who works for money at the expense of ethics. Mercenary (किराए का) 
67. A short statement expressing principle of practical wisdom or rule of conduct. Maxim (उसूल, सिद्धांत)
68. A place where dead bodies are kept before postmortem. Mortuary (मुर्दाघर)
69. A person who hates mankind. Misanthropist (मानवता से घृणा करने वाला)
70. Widely known for bad works. Notorious (कुख्यात) 
71. Providing special favour to his/her relatives or friends by a person who is in high position. Nepotism (भाई-भतीजावाद)
72. Person who eats meat. Non-vegetarian (माँसाहारी)
73. A word or custom which is no longer in use. Obsolete (अप्रचलित)
74. That which is not wide or of a small width. Narrow (संकीर्ण)
75. A person who looks at the bright side of things. Optimist (आशावादी)
76. A child whose parents are not alive. Orphan (अनाथ)
77. One who has unlimited or great power. Omnipotent (सर्वशक्तिशाली)
78. A garden of fruits. Orchard (फलों का बगीचा)
79. Following traditional rules or beliefs in religion. Orthodox (रूढ़िवादी)
80. That which can not be seen through. Opaque (अपारदर्शी)
81. One who is present everywhere. Omnipresent (सर्व-भूत)
82. One who knows everything. Omniscient (सर्वज्ञ)
83. Medical examination of a dead body to know the cause of death. Postmortem (शव-परीक्षा)
84. A person who always looks at negative or dark side of things. Pessimist (निराशावादी)
85. Solution or remedy for all kinds of diseases. Panacea (सर्वरोगहारी)
86. One who leaves on another. Parasite (परजीवी)
87. A person who promote the welfare of others. Philanthropist (परोपकारक)
88. A person who journeys to a holy place for religious reasons. Pilgrim (तीर्थयात्री)
89. Appearing or born after the death of its father or originator. Posthumous (मरणोपरांत)
90. A woman having more than one alive husband. Polyandry (एक से अधिक पति रखना)
91. A person who loves his country so much and prepared to defend it from enemies. Patriot (देशभक्त)
92. A person who walks on foot. Pedestrian (पैदल चलने वाला)
93. A person who lives alone and tends to avoid other people. Recluse (सन्यासी)
94. Intentionally killing of one's own self. Suicide (आत्महत्या)
95. A person who speaks on behalf of individual or a group. Spokesman (प्रवक्ता)
96. A thing which is not fresh. Stale (बासी)
97. A person who never drinks alcohol. Teetotaller (मादक द्रव्यों का त्यागी)
98. A person who believes in God. Theist (आस्तिक)
99. That which can be seen through. Transparent (पारदर्शक)
100. One opinion made by everyone. Unanimous (एकमत)
101. Which is difficult to believe. Unbelievable (अविश्वसनीय)
102. A person who lends money at unreasonably very high rates of interest. Usurer (सूदखोर)
103. A person who does not eat meat and lives completely on vegetable food. Vegetarian (शाखाहारी)
104. A person who has or had a long experience. Veteran (दीर्घानुभवी)
105. Working or acting of one's own free will. Voluntary (स्वैच्छिक) 
106. A place where clothes are hung or stored. Wardrobe (अलमारी) 
107. Not living or growing in a domesticated or cultivated environment. Wild (जंगली) 
108. A woman whose husband is dead. Widow (विधवा) 
109. A man whose wife is dead. Widower (विधुर) 
110. An establishment like park or garden which has a collection of wild animals, birds etc. to display to the public. Zoo (चिड़ियाघर)