One-word substitution is a technique that helps one replace a long phrase, clause, or sentence with a single precise word, without changing its meaning.

Here we have a list more than 100 one word substitutions. Let’s have a look:

  1. Abdicate – to give up throne or an office of position
  2. Accomplice – a partner/companion in crime
  3. Affidavit – a written statement given on oath
  4. Agenda – list of matter to be discussed in a meeting
  5. Aggravate – to make things worse
  6. Allegory – story that expresses ideas through symbols
  7. Alien – a person who is not a naturalised citizen of the country in which he is living
  8. Alimony – allowance ordered by the court to a divorced woman
  9. Alibi – formal statement or evidence, that a person was in another place at the time of crime
  10. Ambiguous – which can be interpreted in two ways
  11. Ambidextrous – capable of using both the hands equally well
  12. Anarchy – absence of govt.
  13. Anarchist – one who believes in or practices anarchism, advocating for the abolition of state, government, or the system of hierarchical authority.
  14. Aristocracy – govt. by the nobility / rule by the highest social class
  15. Autocracy – a govt. by one man
  16. Autobiography – life story of a person written by himself
  17. Arbitrator – a person appointed to settle disputes between two parties
  18. Astronaut – one who travels in space
  19. Atheist – one who does not believe in God
  20. Axiom – a statement accepted to be true by all, without any proof
  21. Bankrupt/Insolvent – person unable to pay his debts
  22. Bibliography – a list of sources or books with authorship, edition, subject
  23. Bibliophile – a person who loves and collects books
  24. Boycott – to shut out from social, political or economic relations
  25. Brain Drain - loss of a country when skilled out and clever people migrate from it to other countries
  26. Bureaucracy – a govt. by the officials
  27. Camouflage – a way of hiding or disguising soldiers, military equipment, etc.
  28. Century – 100 years
  29. Chronology – arrangement of events according to date or time of occurrence
  30. Colleague – an associate in the same enterprise, office, profession, etc.’
  31. Collusion – a secret agreement for fraudulent purpose
  32. Connoisseur – a critical judge, expert, or appreciator of art, music, food, or drink
  33. Contagious – a disease which spreads by contact
  34. Contemporary – living in the same period
  35. Copyright – exclusive right for something
  36. Convalescent – the process of recovering health and strength gradually after an illness, injury, or surgical procedure.
  37. Critic – a person who forms and give judgements about literature, art, music, etc.
  38. Decade – period of 10 years
  39. Debtor/Borrower – one who owes money to another
  40. Defendant – one who is sued by the plaintiff
  41. Democracy – a govt. formed by the people
  42. Domicile – a place where one lives permanently
  43. Defection – act of leaving a party to join another
  44. Detainee – one who is detained in custody
  45. Diplomacy – act of / art of conducting negotiations between nations
  46. Emigrant – one who leaves a country to live in another
  47. Encyclopaedia – a book giving information on all branches of knowledge
  48. Epidemic – widespread of a disease
  49. Etymology – science dealing with the root of words with the formation and development of words
  50. Epilogue – concluding part of a literary work
  51. Exaggerate – describe a thing beyond the limit of truth
  52. Extempore – a speech made without preparation
  53. Fastidious – one who is hard to please
  54. Fatal – causing or ending in death or in lethal disorder
  55. Feminist – one who champions the cause of women
  56. Foreigner – one who belongs to another country
  57. Genealogy – science of human’s descent or person’s pedigree
  58. Genocide – destruction of masses, a community, group, etc.
  59. Hereditary - characteristics, titles, or diseases passed from parents to offspring, often through genes or by familial descent; generation to generation
  60. Heretic - a person whose religious beliefs are believed to be wrong or evil
  61. Heyday - period when somebody/something was most powerful, successful, rich, etc.
  62. Hierarchy - a system or organization that has many levels from the lowest to the highest
  63. Heresy – opinions opposed to established doctrines
  64. Homicide – killing of one person by another
  65. Honorary – given as an honour
  66. Humanitarian – one who sympathises with and serves the people
  67. Hypothesis – idea or suggestion that is based on known facts and is used as basis for reasoning or investigation
  68. Heir – person with the legal right to receive property etc. when the owner dies.
  69. Illegal – something against law
  70. Illicit – not allowed by law or by the rules of society
  71. Immigrant – a foreigner who comes to stay in our country
  72. Immortal – living forever
  73. Impeccable – free from mistake
  74. Impersonal – not showing friendly human feelings
  75. Inadmissible – not allowed/admitted in court of law
  76. Incompetent – not having or showing the necessary skills to achieve something or make something successful
  77. Incorrigible – that cannot be corrected or improved
  78. Infectious – disease able to be transmitted by air, water, etc.
  79. Infinite – without limit
  80. Insomnia – inability to sleep
  81. Integrity – quality of being honest and having strong moral principles
  82. Interdisciplinary - involving two or more different areas of knowledge or study
  83. Intermediary – person who acts as a means of communication between two or more
  84. International – existing between two or more nations
  85. Intestate – not having made a will before one dies
  86. Jurisdiction – extent of the authority of someone
  87. Juvenile – a young person who is not yet adult
  88. Kudos – honour and glory
  89. Lawyer – person who has studies law
  90. Legacy – property/money left by the predecessor
  91. Library – A place where books are kept
  92. Linguist – one who studies the science of languages
  93. Litigant – party to a lawsuit
  94. Malicious – desire to harm others
  95. Manuscript – a paper written by hand
  96. Manifesto – a policy by a political party, for public declaration
  97. Matriarchy – family structure with a female as the head
  98. Monarchy – govt. by a king
  99. Monopoly – excessive possession of trade in something
  100. Nepotism – undue favour shown to one’ relative
  101. Neutral – taking neither side in a dispute; remaining impartial
  102. Omnipresent – present everywhere
  103. Omniscient – having endless knowledge
  104. Omnist – a person who believes in all religions  
  105. Pacifist – one who hates war and loves peace
  106. Panacea – a medicine supposed to cure all diseases; a universal remedy
  107. Pantheism – A belief that God pervades nature
  108. Passport – a document allowing a person to travel abroad
  109. Patent – sole right to make and produce some innovation
  110. Pathology – study of diseases
  111. Posthumously – something that happens, is done, or is published after a person has died.
  112. Philanthropist - a rich person who helps the poor and those in need, especially by giving money
  113. Patriarch – male head of a family
  114. Poet – a person who writes poems
  115. Pseudonym - a fictitious name assumed by an individual, such as a writer, actor, or performer, to conceal their identity, protect privacy, or manage a brand, distinct from their legal name.
  116. Prologue – into part
  117. Saga – a long description of an eventful practice or experience
  118. Sarcasm – a bitter and ironical remark
  119. Scapegoat – a person who is made to bear the blame of another
  120. Satire – form of writing holding up a person/society to show the foolishness and wickedness of any idea/custom, etc.
  121. Sceptic - a person who doubts that something is true, right, etc.
  122. Simultaneous – things happening at the same time
  123. Soliloquy – speaking aloud one’s thoughts to oneself
  124. Spendthrift – one who spends money a lot, carelessly
  125. Statesman – a foresighted selfless political leader, skilled in management of state affairs
  126. Stoic – one who is indifferent to pleasure or pain
  127. Suicide – killing of oneself
  128. Sumptuous - very expensive and impressive; lavish
  129. Superfluous – more than is wanted; not needed
  130. Stampede – a sudden, uncontrolled rush of a panicked crowd of people or herd of animals, often triggered by fear or excitement
  131. Synonyms – words with same meaning
  132. Theist – one who believes in existence of God.
  133. Tribute – action /statement/gift that is meant to show respect or admire someone/something
  134. Unanimous – all being of one opinion
  135. Unique – being the only one of its type
  136. Universal – something applicable, present, or available everywhere, for everyone
  137. Utopia - a place or state that exists only in the imagination, where everything is perfect
  138. Verbatim – exactly as it was spoken or written
  139. Veteran – one having long experience in military / fight for freedom
  140. Ward – a person who is under the custody/protection of legal a guardian
  141. Zenith – highest point
  142. Anonymous – Of unknown name or authorship
  143. Outlaw – A person deprived of protection of law
  144. Arbitrator - One appointed to settle dispute between two parties
  145. Omnipotent - Having boundless power
  146. Inevitable - That cannot be avoided