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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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affect

Grammar usage guide and real-world examples

USAGE SUMMARY

'affect' is correct and usable in written English.
It is most commonly used as a verb meaning to influence or cause change in something. Example sentence: His words had an immediate affect on her mood.

✓ Grammatically correct

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"Although the investigation is in its early stages, we will take action to protect the public if we uncover evidence that could affect the safety of other rides at the park or elsewhere".

News & Media

The Guardian

"It is not going to affect the set-up for the game in any way, shape or form.

A Department for Transport spokesman said: "It is extremely disappointing that Network Rail's engineering works have overrun and will affect travellers during this festive season, passengers will be rightly annoyed.

Further Scottish devolution and measures that will give English MPs more say over laws that only affect England.

News & Media

The Guardian

Though all of us are all sensitive to heat, and quick to react when it climbs above our comfort levels, our knowledge of how it might affect our health doesn't really go beyond sunstrokes and fainting spells.

News & Media

The Guardian

Writing before the announcement that Australia was withdrawing its ambassador, he predicted the executions would affect Australians' perceptions of Widodo for the rest of his tenure, but warned against such a step.

News & Media

The Guardian

When interviewed, aspiring journalists with disabilities said the issues that concerned them most were: whether or not to disclose their disability in a covering letter with their CV; if they had the right image for the employer; and whether or not the disability would affect their ability, or perceived ability, to perform a task.

News & Media

The Guardian

How do you think urbanisation will affect the way NGOs work?

News & Media

The Guardian

Related: How will an ageing population affect legacy fundraising?

News & Media

The Guardian

I think that's one of the pleasing things of the last four days, that they haven't let it affect them".

Ben Marks of OpinionPanel said: "It's interesting that the new arrangements won't even affect the current crop of students; it's those starting from 2012 who'll really be affected.

News & Media

The Guardian
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Expert writing Tips

Best practice

Consider the intensity of the impact you want to convey. If a strong impact is intended, "impact" might be a better choice than "affect".

Common error

A common mistake is using "affect" when "effect" is needed. "Affect" is primarily a verb, while "effect" is often a noun. Remember: "affect" influences; "effect" is the result.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

93%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Linguistic Context

The primary grammatical function of "affect" is a transitive verb, meaning it requires a direct object. As Ludwig AI indicates, "affect" commonly expresses the action of influencing or causing a change in someone or something.

Expression frequency: Very common

Frequent in

News & Media

35%

Formal & Business

30%

Science

20%

Less common in

Encyclopedias

5%

Wiki

5%

Reference

5%

Ludwig's WRAP-UP

In summary, "affect" functions primarily as a verb meaning to influence or have an impact on something. As Ludwig AI confirms, it's crucial to differentiate "affect" from "effect", a commonly made mistake. "Affect" is prevalent across various contexts, notably in news, business, and scientific domains. To ensure accurate usage, remember that "affect" is an action, whereas "effect" is a result. By paying attention to these nuances, you can confidently and correctly incorporate "affect" into your writing.

FAQs

How is "affect" typically used in a sentence?

The word "affect" is generally used as a verb to indicate that something is influencing or causing a change in something else. For example, "The weather can "influence" your mood".

What's a good alternative to "affect" that still implies influence?

Alternatives to "affect" include "influence", "impact", or "alter". The best choice depends on the specific nuance you want to convey.

Which is correct: "affect" or "effect"?

The correct word depends on the context. "Affect" is usually a verb meaning to influence, while "effect" is usually a noun meaning a result or consequence. Using them interchangeably is a common error; if you need a verb, "affect" is often the better choice, but consider if other synonyms such as "influence" are more appropriate.

How can I best avoid misusing the word "affect"?

To avoid misusing "affect", remember that it's primarily a verb. If you're describing an action that influences something, "affect" is likely correct. If you're referring to a result or consequence, use "effect" instead. Thinking of synonyms such as "influence" and "result" can help.

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Authority and reliability

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Real-world application tested

Most frequent sentences: