One Word Substitution List and Examples 2025 - Summary
One-word substitution PDF means using a single word to replace a longer phrase or sentence, making your communication clearer and easier. This method helps simplify sentences without changing their original meaning, giving you a more exact way to express ideas. One-word substitution is a common topic in many Indian competitive exams like SSC CGL, SSC CHSL, UPSC, and Defence Exams, where these questions test your vocabulary and understanding.
Understanding One Word Substitution
Getting good at one-word substitutions not only boosts your vocabulary but also improves your writing and speaking. Learning with examples and practice makes it easier. Visualising the meaning or making sentences with these words can help you remember them well.
One Word Substitution Examples for Competitive Exams
| One Word Substitution | Meaning / Phrase |
|---|---|
| Aviation | Study of flying aeroplanes |
| Astronomy | Study of celestial bodies |
| Alchemy | The ancient search for a universal panacea and philosophers stone; medieval form of Chemistry |
| Acoustics | Study of sound and sound waves |
| Anthropology | The study of human evolution |
| Botany | The study of plants |
| Biology | Study of living organisms |
| Calligraphy | Art of fine handwriting |
| Chronology | Science of arranging events by time |
| Demography | The study of population statistics |
| Entomology | Study of insects |
| Ecology | Study of relationships between organisms and their environment |
| Genetics | Study of heredity and variation in living organisms |
| Geology | The study of rocks and earth’s structure |
| Geography | Mapping and study of the earth and its features |
| Graphology | Study of handwriting |
| Gerontology | Study of ageing and related aspects |
| Hydraulics | Study of flow of water and other liquids |
| Lexicography | The practice of compiling dictionaries |
| Numismatics | Study and collection of coins and currency |
| Ornithology | Study of birds |
| Philology | The study of languages and literary texts |
| Palaeography | Study of ancient writing and manuscripts |
| Psychology | The study of the human mind and behavior |
| Psephology | Study of elections and voting trends |
| Theology | Study of religion and faith |
| Ecophobia | Fear of home surroundings |
| Zoophobia | Fear of animals |
| Claustrophobia | Fear of confined spaces |
| Hydrophobia | Fear of water |
| Bibliophobia | Fear of books |
| Xenophobia | Fear or dislike of foreigners |
| Necrophobia | Fear of dead bodies |
| Aerophobia | Fear of heights or flying |
| Ophiophobia | Fear of snakes |
| Syngenesophobia | Fear of relatives |
| Nomophobia | Fear of being without a mobile phone |
| Mariticide | Killing of one’s husband |
| Parricide | Killing of parents |
| Genocide | Killing of a whole race or community |
| Infanticide | Killing of a newborn child |
| Regicide | Killing of a king |
| Homicide | Killing of a human being |
| Suicide | Killing of oneself |
| Patricide | Killing of a father |
| Matricide | Killing of a mother |
| Fratricide | Killing of a brother |
| Sororicide | Killing of a sister |
| Uxoricide | Killing of a wife |
| Dipsomania | Compulsive desire to drink alcohol |
| Kleptomania | Compulsive urge to steal |
| Bibliokleptomania | Compulsive urge to steal books |
| Pyromania | Compulsive urge to start fires |
| Megalomania | Delusion of having great power or importance |
| Nymphomania | Uncontrollable sexual desire in women |
| Satyromania | Uncontrollable sexual desire in men |
| Monomania | Obsession with a single idea or subject |
| Mythomania | Compulsive lying |
| Mania | Excessive enthusiasm or madness for something |
You can download the One Word Substitution PDF using the link below.
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