One-word substitution refers to replacing a group of words or a phrase with a single word that expresses the same or a similar meaning. These substitutions are often used to make writing more concise and precise. Here are some examples of one-word substitutions:

1. Ambidextrous: A person who can use both hands with equal skill.
2. Altruistic: Showing selfless concern for the well-being of others; unselfish.
3. Euphemism: A mild or indirect word or expression used in place of a harsh or unpleasant one.
4. Chronology: The arrangement of events in the order in which they occurred; a timeline.
5. Plagiarism: The act of taking someone else’s work, ideas, or words and passing them off as one’s own.
6. Omnipotent: Having unlimited power or authority; all-powerful.
7. Pseudonym: A fictitious name used by an author instead of their real name.
8. Xenophobia: Fear or hatred of foreigners or strangers.
9. Eclectic: Deriving ideas, styles, or tastes from a broad and diverse range of sources.
10. Paradox: A statement or situation that appears contradictory but may actually be true.

These are just a few examples of one-word substitutions. Using one-word substitutes can enhance clarity and efficiency in writing by conveying complex ideas concisely.