why

USAGE SUMMARY

The word 'why' is correct and usable in written English.
You can use it when asking a question or when expressing puzzlement, surprise, or doubt. Example sentence: Why did you decide to take that route?.

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It is easy to see why.

The New York Times

It is not hard to see why.

The New York Times

Why so?

The New York Times - Arts

One can see why.

The New York Times

The question is why.

The New York Times

But why now?

The New York Times

Why don't they?

The New York Times - Sports

I mean, why not?

The New York Times

And why stop there?

The New York Times - Tech

"Ask yourself: if I were a Chinese spy, why wouldn't I have flown directly into Beijing?

The New York Times

Why would it?

The New York Times

Expert writing Tips

Best practice

When starting a sentence with "why", ensure it's a direct question. For example, "Why did you choose this option?" is correct, while "The reason why you chose this option..." is often redundant and can be rephrased.

Common error

Avoid using "the reason why" as it is often redundant. Instead of saying "The reason why I did it is...", simply state "I did it because...".

Linguistic Context

The word "why" primarily functions as an interrogative adverb, used to introduce questions seeking the cause, reason, or purpose behind an action or event. As Ludwig AI clarifies, it's grammatically sound and widely applicable in various contexts.

Expression frequency: Very common

Frequent in

News & Media

100%

Less common in

Science

0%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the word "why" functions as an interrogative adverb, predominantly used to inquire about reasons or causes. As Ludwig AI confirms, it's a grammatically correct term with widespread usage, particularly in news and media. While generally versatile, it's essential to avoid redundant constructions like "the reason why." For alternatives, consider phrases like "for what reason" or "how so", depending on the specific context. Proper usage ensures clarity and conciseness in both formal and informal communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

what's the reason

Directly asks for the explanation behind something.

how so

A concise way to ask for further explanation.

for what reason

More formal phrasing to inquire about the cause or justification.

on what grounds

Emphasizes the basis or justification for an action or belief.

what's the purpose

Inquires about the intended function or aim.

to what end

Focuses on the ultimate purpose or goal of something.

what caused this

Focuses on identifying the cause of a specific event or situation.

what brings this about

Inquires about the reason or cause for something happening.

by what means

Asks about the method or process used to achieve something.

how does it come about

Explores the process or circumstances leading to a particular outcome.

FAQs

How to use "why" in a sentence?

Use "why" to ask a question about the reason or cause of something. For example, "Why is the sky blue?" or "I don't understand "why he left"".

What can I say instead of "why"?

Depending on the context, you can use alternatives such as "for what reason", "how so", or "to what end" to express inquiry.

Is it correct to say "the reason why"?

While commonly used, "the reason why" can be redundant. It's often clearer and more concise to simply use "because" or rephrase the sentence.

What's the difference between "why" and "how come"?

"Why" is a direct question word, while "how come" is a more informal way of asking for a reason. For example, "Why did you do that?" is equivalent to "How come you did that?"