CGL English Language: One Word Substitution — Complete Concept Guide with MCQs

Exam: CGL | Subject: English Language | Topic: One Word Substitution | Year: 2026

Concept Overview

One Word Substitution (OWS) is a key vocabulary topic in SSC exams where a group of words or a phrase must be replaced by a single precise word. This topic tests your knowledge of advanced English vocabulary and your ability to identify the most accurate term.

Key Categories to Master

  • Phobias: Fear-related words (Hydrophobia, Acrophobia, Claustrophobia)
  • -cide words: Killing-related (Patricide, Matricide, Homicide, Genocide)
  • Governance terms: Democracy, Autocracy, Oligarchy, Theocracy, Plutocracy
  • Study fields: Numismatics, Philately, Seismology, Ornithology, Numismatology
  • Person descriptions: Philanthropist, Misanthrope, Misogynist, Bibliophile

Exam Strategy

In SSC CGL, OWS questions typically appear in the English section with 2-3 questions per exam. Focus on Greco-Latin roots: knowing that 'omni' means 'all', 'philia' means 'love', and 'phobia' means 'fear' can help you decode unfamiliar words. Use elimination — rule out clearly wrong options first, then select the most precise match.

⚡ Quick Tip: Learn words in family groups: omni- (omnipresent, omnipotent, omniscient), -cide (homicide, patricide, matricide), -phobia (hydrophobia, acrophobia, xenophobia). This multiplies your vocabulary quickly.

Practice MCQs (10 Questions)

Test your understanding of One Word Substitution with these CGL level questions.

Q1. A person who is present everywhere

  1. Omnipresent
  2. Omnipotent
  3. Omniscient
  4. Ubiquitous

Explanation: Omnipresent means present everywhere at the same time. Omnipotent = all powerful; Omniscient = all knowing; Ubiquitous is similar but omnipresent is the exact one-word substitution.

Q2. Fear of water

  1. Hydrophobia
  2. Aquaphobia
  3. Thalassophobia
  4. Hydropathy

Explanation: Hydrophobia literally means 'fear of water' (hydro = water, phobia = fear) and is the standard one-word substitution used in SSC exams.

Q3. A person who loves humanity

  1. Philanthropist
  2. Misanthrope
  3. Humanitarian
  4. Altruist

Explanation: Philanthropist derives from Greek philos (love) + anthropos (human). This is the most precise one-word substitution for 'lover of humanity'.

Q4. Study of coins

  1. Numismatics
  2. Philately
  3. Seismology
  4. Numismatology

Explanation: Numismatics is the study or collection of currency, coins, tokens, and related objects. Philately = study of stamps.

Q5. One who cannot be corrected

  1. Incorrigible
  2. Irrevocable
  3. Inexorable
  4. Inevitable

Explanation: Incorrigible means (of a person or their tendencies) not able to be corrected, improved, or reformed. Common SSC trap: Irrevocable refers to decisions, not persons.

Q6. A place where bees are kept

  1. Apiary
  2. Aviary
  3. Granary
  4. Dormitory

Explanation: Apiary is a place where honeybees are kept. Aviary = place for birds. This is a frequently tested SSC vocabulary item.

Q7. A government run by the people

  1. Democracy
  2. Autocracy
  3. Oligarchy
  4. Theocracy

Explanation: Democracy (demos = people, kratia = rule) is government by the people. Autocracy = rule by one; Oligarchy = rule by few; Theocracy = rule by religious authority.

Q8. One who eats everything

  1. Omnivore
  2. Herbivore
  3. Carnivore
  4. Insectivore

Explanation: Omnivore (omni = all, vorare = to eat) eats both plants and animals. This is direct vocabulary and a common easy question in SSC.

Q9. A disease affecting many people at once

  1. Epidemic
  2. Endemic
  3. Pandemic
  4. Sporadic

Explanation: Epidemic affects many people in an area at once. Pandemic = worldwide; Endemic = regularly found among particular people; Sporadic = occasional.

Q10. Murder of one's father

  1. Patricide
  2. Matricide
  3. Fratricide
  4. Infanticide

Explanation: Patricide = killing of one's father (pater = father). Matricide = mother; Fratricide = brother; Infanticide = infant.

Key Takeaways

  • Master the core concepts and formulas for One Word Substitution before attempting questions
  • Practice elimination strategy — rule out clearly wrong options first
  • Review explanations for every question, including those you answered correctly
  • This topic appears consistently in CGL exams — expect 2-4 questions

Prepared for CGL 2026 examination by GPT Sir. Visit gptsir.in for more practice material and AI-powered study assistance.