Grammar Rules & Usage Guide | Merriam-Webster

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'Affect' vs. 'Effect'

How to pick the right one

Is it 'autumn' or 'fall'?

Why does this season have two different names?

Using Bullet Points ( • )

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Be dashing—and do it well

The Difference Between 'i.e.' and 'e.g.'

For example, the different ways to use them

Democracy or Republic: What's the difference?

And which is the United States?

Your vs. You're: How to Use Them Correctly

Here's your explanation, and you're welcome

Every Letter Is Silent, Sometimes: A-Z List of Examples

When each letter can be seen but not heard

Usage Notes

Can you end a sentence with a preposition?

Yes, a preposition is something you can end with.

First, Second and Third Person Explained

First, second, and third person explained

31 Useful Rhetorical Devices

Beyond 'simile' and 'metaphor'

Are 'funner' and 'funnest' real words?

We got a whole mess of fun here, folks

Can you use 'comprised of'?

It's been in use for centuries.

Punctuation

Why do we use apostrophes to show possession?

The shifting role of the apostrophe

A Guide to Using Colons

We'll get to semicolons later.

To Use or Not Use the "?" in Requests

"Would you read this, please."

All About Ellipses ...

How to use them … and talk about them

How to Use Word Division Dots and Syllable Hyphens

Dictionary secrets, revealed!