Many people get confused by “to that effect” and “affect” because they look and sound somewhat similar. However, they have completely different meanings and are used in different situations.
If you are a student, a learner, or someone who wants to improve their English, this guide will help you understand the difference in a very simple way. By the end of this article, you will know exactly when to use to that effect and when to use affect, and you will be able to avoid common mistakes.
Quick Answer
| Term | Meaning | Part of Speech | Example |
| To that effect | Meaning something similar to what was said | Phrase | She said something to that effect. |
| Affect | To influence or change something | Verb | Rain can affect travel plans. |
Easy Rule
| If you mean… | Use |
| Something similar was said | To that effect |
| To influence or change something | Affect |
Simple Background Explanation
English has many words and phrases that sound alike but mean different things.
What is “To That Effect”?
| Point | Explanation |
| Type | Phrase |
| Meaning | Something similar to what was said |
| Purpose | Used when you do not repeat exact words |
| Common Use | Conversations, reports, news articles |
The phrase to that effect is often used when you cannot remember the exact words someone used.
What is “Affect”?
| Point | Explanation |
| Type | Verb |
| Meaning | To influence or change |
| Purpose | Shows impact on something |
| Common Use | School, work, news, daily conversations |
The word affect talks about influence or change.
The Main Difference
| To That Effect | Affect |
| A phrase | A verb |
| Refers to similar wording | Refers to influence |
| Used when reporting speech | Used when discussing change |
| Does not mean influence | Means influence |
| Usually follows something someone said | Usually comes before an object |
Example Comparison
| Sentence | Correct Usage |
| She said something to that effect. | Phrase about similar words |
| The weather may affect the game. | Influence or impact |
Understanding “To That Effect”
Imagine your friend says:
“I don’t think I can come to the party tonight.”
Later, someone asks what your friend said.
You might answer:
“He said something to that effect.”
This means:
| What You Mean | Explanation |
| Not exact words | True |
| Similar message | True |
| Talking about influence | False |
More Examples
| Sentence | Meaning |
| The manager made a statement to that effect. | Similar statement was made |
| She replied to that effect. | She said something similar |
| The article included comments to that effect. | Similar comments appeared |
Understanding “Affect”
The word affect means to influence, change, or have an impact on something.
Examples
| Sentence | What Is Being Changed? |
| Rain can affect traffic. | Traffic |
| Lack of sleep affects concentration. | Concentration |
| Stress can affect health. | Health |
| Noise affects learning. | Learning |
Simple Formula
| Pattern |
| Something + affects + something |
Examples:
| Pattern Applied |
| Weather affects travel. |
| Music affects mood. |
| Exercise affects health. |
Comparison Table
| Feature | To That Effect | Affect |
| Word Type | Phrase | Verb |
| Meaning | Similar wording | Influence or change |
| Used In | Reporting speech | Showing impact |
| Refers To | Statements | Actions and results |
| Exact Words Needed? | No | Not applicable |
| Common In Conversations? | Yes | Yes |
| Common In News? | Yes | Yes |
| Common In School Writing? | Sometimes | Very often |
| Can It Show Influence? | No | Yes |
| Easy Memory Tip | Similar message | Influence |
Which One Should You Use and When?
Use “To That Effect” When:
| Situation | Example |
| You cannot remember exact words | He said something to that effect. |
| Summarizing a statement | The report mentioned something to that effect. |
| Repeating an idea loosely | She wrote comments to that effect. |
Use “Affect” When:
| Situation | Example |
| Talking about influence | Weather affects crops. |
| Talking about change | Prices affect spending. |
| Discussing impact | Noise affects sleep. |
Common Mistakes People Make
Mistake 1
❌ The weather to that effect my plans.
✅ The weather affects my plans.
| Why? |
| Affect means influence. |
Mistake 2
❌ She said something affect.
✅ She said something to that effect.
| Why? |
| You are talking about similar wording, not influence. |
Mistake 3
❌ The teacher to that affect the students.
✅ The teacher affected the students.
| Why? |
| Affect is the correct verb. |
Everyday Real-Life Examples
In Emails
| Example |
| The client sent a message to that effect. |
| The delay may affect delivery times. |
In News Reports
| Example |
| Officials released a statement to that effect. |
| Rising costs affect many families. |
On Social Media
| Example |
| Someone posted comments to that effect. |
| Negative reviews can affect sales. |
At School
| Example |
| The teacher said something to that effect. |
| Missing classes may affect grades. |
At Work
| Example |
| The manager made remarks to that effect. |
| Budget cuts affect hiring decisions. |
Learning Section for Students and Beginners
A simple trick can help you remember the difference.
| Word | Memory Trick |
| Affect | Starts with A = Action that changes something |
| To That Effect | Refers to a statement or message |
Quick Practice
| Sentence | Answer |
| Bad weather can _____ travel plans. | Affect |
| He said something _____ . | To that effect |
| Stress can _____ your health. | Affect |
| The article contained remarks _____ . | To that effect |
FAQs
1. Is “to that effect” the same as “affect”?
No.
| Term | Meaning |
| To that effect | Similar wording |
| Affect | Influence or change |
2. Does it affect a verb?
Yes.
Example:
Exercise affects health.
3. Can “to that effect” be used as a verb?
No.
It is a phrase, not a verb.
4. What is the easiest way to remember affect?
Think:
| Affect = Influence |
If something changes another thing, use affect.
5. Why do people confuse them?
| Reason |
| Similar spelling |
| Similar sound |
| English learners often see them together |
6. Can I use “to that effect” in formal writing?
Yes.
| Suitable For |
| Essays |
| Reports |
| News writing |
| Business communication |
7. Can affect be positive or negative?
Yes.
| Example | Type |
| Exercise affects health positively. | Positive |
| Pollution affects health negatively. | Negative |
8. Which word is more common in daily English?
| Expression | Usage Frequency |
| Affect | Very common |
| To that effect | Less common but still useful |
Conclusion
Understanding to that effect vs affect becomes easy once you know their basic roles. To that effect is a phrase used when referring to words or ideas that are similar to what someone said. Affect is a verb that means to influence, change, or impact something.
Whenever you talk about a statement, comment, or message that is not quoted exactly, use to that effect. Whenever you talk about influence, results, or change, use affect.
Remember this simple rule:
| Meaning | Correct Choice |
| Similar wording | To that effect |
| Influence or change | Affect |
Keep practicing with everyday examples, and soon the difference will feel completely natural.
