One Word Substitution tests your ability to identify precise words that capture complete meanings. For example, 'A person who studies stars' becomes 'Astronomer'. The substitute word must match the exact meaning of the given phrase
Person-related substitutions (60% of questions) 2. Study/Science field substitutions (25% of questions) 3. Government/Political terms (10% of questions) 4. Miscellaneous concepts (5% of questions) Shortcut Formula 1 - Person Pattern: If the phrase starts with 'A person who...', look for words ending in -er, -ist, -ian, -or
A person who sells books = Bookseller, A person who studies psychology = Psychologist
If the phrase mentions 'study of...', add -logy, -graphy, or -metry to the root
Study of earthquakes = Seismology, Study of handwriting = Graphology
Fear/abnormal conditions often end in -phobia. Diseases/conditions end in -itis or -osis
Fear of water = Hydrophobia, Inflammation of joints = Arthritis.
Identify the key concept - government by people
Apply government pattern - look for -cracy endings
'Demo' means people, 'cracy' means government
Answer = Democracy Worked Example 2: Question: 'A person who believes that war and violence are unjustified'
Identify this is a person-related question
Key concept is 'against war and violence'
'Pac' means peace, '-ist' indicates a person who believes in something
Answer = Pacifist Exam
Use elimination method. If you know 2-3 options are wrong, guess from remaining choices. Most SSC CGL one-word substitutions follow common English patterns, so trust your language instinct.
#1: Students often confuse similar-sounding words. For example, 'Autobiography' (self-written life story) vs 'Biography' (life story written by others). Always read the phrase carefully to identify WHO is doing the action.
This confusion costs many students easy marks. Another frequent error is mixing up medical and scientific terms. 'Cardiology' is study of heart, while 'Cardiologist' is the person who studies hearts. Pay attention to whether the question asks for the field of study or the person practicing it. Time Management: Spend maximum 30 seconds per question. If you don't know the answer immediately, use elimination and move on.
These questions test vocabulary knowledge, not reasoning ability.
9graded MCQs · easy to hard · full solution & trap analysis