What Is the Opposite of ‘increase’?
The direct opposite of “increase” is “decrease.” While “increase” means to make something larger in amount, size, or degree, “decrease” means to make something smaller or reduce it. For example, if a company increases its prices, customers may buy less, and the company might later need to decrease them to attract buyers again. These two words form a clear antonym pair that appears frequently in business, science, daily conversation, and academic writing.
Quick Answer
Opposite of “increase” = decrease (verb and noun). Other common opposites include reduce, lower, diminish, and cut. The choice depends on context, tone, and whether you are speaking formally or informally.
Understanding the Core Opposite: Increase vs. Decrease
“Increase” and “decrease” are direct antonyms. Both can be used as verbs (“Sales increased last quarter” / “Sales decreased last quarter”) and as nouns (“an increase in temperature” / “a decrease in temperature”). They are neutral in tone and work well in formal writing, emails, reports, and everyday conversation.
Formal vs. Informal Tone
- Formal: “The board voted to decrease the budget by 10%.”
- Informal: “We need to cut back on spending.”
- Neutral: “The number of students decreased this year.”
In formal writing (reports, academic papers, business emails), “decrease” is the safest choice. In casual conversation, native speakers often use “go down,” “drop,” or “cut.”
Comparison Table: Increase vs. Decrease
| Aspect | Increase | Decrease |
|---|---|---|
| Meaning | To become or make larger | To become or make smaller |
| Part of speech | Verb and noun | Verb and noun |
| Formal tone | “The company increased its workforce.” | “The company decreased its workforce.” |
| Informal tone | “Prices went up.” | “Prices went down.” |
| Common collocations | increase in price, increase in demand, increase in value | decrease in price, decrease in demand, decrease in value |
| Example in email | “We have increased the delivery speed.” | “We have decreased the delivery time.” |
Natural Examples
Here are real-life sentences showing “increase” and its opposite in context:
- Business: “After the marketing campaign, website traffic increased by 40%. However, after we stopped advertising, traffic decreased steadily.”
- Health: “Regular exercise can increase your energy levels, while a poor diet may decrease them.”
- Weather: “Temperatures are expected to increase during the day and decrease at night.”
- Finance: “The bank decided to increase interest rates, which caused loan applications to decrease.”
- Education: “Studying daily will increase your vocabulary, but skipping practice will decrease your progress.”
Common Mistakes
English learners often confuse “increase” and “decrease” with similar words. Here are the most frequent errors:
Mistake 1: Using “decrease” when you mean “reduce”
“Decrease” and “reduce” are very similar, but “reduce” often implies a deliberate action. “Decrease” can be natural or intentional. Example: “The population decreased naturally” (correct). “We reduced the price” (more common than “decreased the price” in active voice).
Mistake 2: Confusing “decrease” with “decline”
“Decline” can mean a gradual decrease, but it also means to refuse something. “The company declined the offer” (refused) is different from “Sales declined” (decreased).
Mistake 3: Wrong preposition
Correct: “a decrease in sales” (not “decrease of sales” when talking about a reduction). However, “a decrease of 10%” is correct when specifying the amount.
Mistake 4: Using “less” with countable nouns
“Fewer” is for countable items, “less” for uncountable. “There was a decrease in the number of students” (correct). “There was a decrease in less students” (incorrect).
Better Alternatives to “Decrease”
Depending on the situation, you might choose a different opposite for “increase.” Here are strong alternatives with examples:
- Reduce – Best for deliberate actions. “We need to reduce costs.”
- Lower – Common for prices, volume, or intensity. “Please lower the volume.”
- Cut – Informal, strong. “They cut the budget.”
- Diminish – More formal, often gradual. “His influence diminished over time.”
- Drop – Informal, sudden. “The temperature dropped overnight.”
- Fall – Often used for numbers. “Stock prices fell sharply.”
When to Use Each
- Formal email: “We have decided to reduce the project scope.”
- Casual conversation: “Let’s cut back on snacks.”
- Scientific report: “The concentration of the solution decreased.”
- News headline: “Unemployment falls to record low.”
Mini Practice Section
Test your understanding. Choose the correct word to complete each sentence.
- After the price increase, customer demand __________. (a) increased (b) decreased (c) remained the same
- The manager wants to __________ the number of meetings. (a) increase (b) decrease (c) both are possible depending on context
- If you __________ your study time, your grades will improve. (a) increase (b) decrease (c) cut
- There was a significant __________ in sales during the holiday season. (a) increase (b) decrease (c) either could be correct
Answers
- b) decreased – A price increase usually leads to lower demand.
- c) both are possible – The manager could want fewer meetings (decrease) or more meetings (increase). Context matters.
- a) increase – More study time typically leads to better grades.
- c) either could be correct – Sales could increase (if the holiday is busy) or decrease (if the business is slow).
Frequently Asked Questions
1. Is “decrease” always the opposite of “increase”?
Yes, “decrease” is the most direct and common antonym. However, depending on context, words like “reduce,” “lower,” “diminish,” or “cut” may be more natural. For example, “increase speed” pairs naturally with “reduce speed” in driving instructions.
2. Can “increase” and “decrease” be used as nouns?
Yes. “There was an increase in temperature” and “There was a decrease in temperature” are both correct. As nouns, they are often followed by “in” (increase in, decrease in).
3. What is the opposite of “increase” in a business email?
In a formal business email, “decrease” works well. For example: “We have seen a decrease in customer complaints.” You can also use “reduce” for actions you control: “We plan to reduce overhead costs.”
4. Is there a difference between “decrease” and “decline”?
Yes. “Decline” often implies a gradual or continuous reduction and can also mean “to refuse.” “Decrease” is more neutral and can be sudden or gradual. For example: “The population declined over decades” (gradual). “Sales decreased after the recall” (could be sudden).
Final Tip for Learners
When you learn a new word like “increase,” always learn its opposite at the same time. This builds stronger vocabulary connections. Practice by writing two sentences: one with “increase” and one with its opposite. For example: “I want to increase my savings” and “I need to decrease my spending.” This simple habit will help you remember both words naturally.
For more word pairs like this, explore our Common Opposites section. If you have questions about specific antonyms, check our FAQ page or contact us.
