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Est. 1828

Grammar & Usage

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

'A historic' night or 'An historic' night?

More Words You Always Have to Look Up

The dictionary is always here to help

How to Use 'Who' vs. 'Whom'

What you really need to know
  • Commonly Confused
  • Usage Notes
  • Spelling & Pronunciation
  • Punctuation

Popular

'Affect' vs. 'Effect'

How to pick the right one

Using Bullet Points ( • )

Do you 'say your piece' or 'say your peace'?

The whole truth about a confusing idiom.

Is 'Data' Singular or Plural?

Why is '-ed' sometimes pronounced at the end of a word?

A learned explanation that is not wicked hard

Words You Always Have to Look Up

The dictionary is here to help

Democracy or Republic: What's the difference?

A case can be made for either

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

Be dashing—and do it well

Commonly Confused

Commonly Confused

  • The Difference between 'Race' and 'Ethnicity'

    How they differ and overlap
  • Homophones, Homographs, and Homonyms

    The same, but different
  • On 'Biweekly' and 'Bimonthly'

    Sorry, not sorry
  • 'Insure' vs. 'Ensure' vs. 'Assure'

    Here's how to make sure
  • See All

Is it 'home in' or 'hone in'?

Both are used, but 'home in' does a better job of hitting the mark.

Usage Notes

See More

Can ‘criteria’ ever be singular?

It depends on what you base your decision.

Plural and Possessive Names: A Guide

A guide to plural and possessive names

Singular Nonbinary ‘They’: Is it ‘they are’ or ‘they is’?

Notes on a conjugation

Is Singular 'They' a Better Choice?

The awkward case of 'his or her'

8 Grammar Terms You Used to Know, But Forgot

Plus yodeling
See More

Spelling & Pronunciation

Spelling & Pronunciation

  • 10 Words You See But Don't Hear

    How to pronounce 10 words with unpredictable stress and vowel sounds
  • How to Remember the Spelling of 'Definitely'

    A definitive answer.
  • Absent Letters That Are Heard Anyway

    They aren't seen but they are heard
  • How to Pronounce the Trickiest Menu Items

    No more order anxiety!
  • See All

The Many Plurals of 'Octopus'

But which is correct?

Punctuation

See More

The Serial Comma Explained

Why don't they call it the Merriam-Webster comma?

The History of 'Ampersand'

How the '&' got its name

All About Ellipses ...

How to use them … and talk about them

Comma Splices: What They Are and How to Correct Them (or not)

Adventurous writers pull them off regularly

Why do we use apostrophes to show possession?

The shifting role of the apostrophe
See More
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