Join In
Twitter
YouTube
Weekly Newsletter
Libraries
A-Z Grammatical Terms
A-Z Confused Words
FAQs by Writers
A-Z Awkward Plurals
Punctuation Lessons
Common Mistakes
(ordered by seriousness) ESL Vocabulary Lists Parts of Speech Lists A-Z Idioms and Proverbs Tests and Games Top Tip Install a grammar checker
for your browser
(ordered by seriousness) ESL Vocabulary Lists Parts of Speech Lists A-Z Idioms and Proverbs Tests and Games Top Tip Install a grammar checker
for your browser
Parenthetical Punctuation
What Is Parenthetical Punctuation? (with Examples)
Parenthetical punctuation is used in pairs to offset non-essential information in a sentence. There are three commonly used types of parenthetical punctuation:(1) Commas
- John Smith, a local plumber, won the lottery.
(2) Dashes
- John Smith — a local plumber — won the lottery.
(3) Parentheses (i.e., Round Brackets)
- John Smith (a local plumber) won the lottery.
Table of Contents
- Examples of Parenthetical Punctuation in Sentences
- Commas, Dashes, or Parentheses?
- Why Parenthetical Punctuation Is Important
- Printable Test

Examples of Parenthetical Punctuation in Sentences
Here are some examples of parenthetical punctuation in sentences. In each example, the parenthesis being offset is shaded.- Mrs Allan, 64 at the time, rang the police immediately. (In this example, commas have been used as the parenthetical punctuation.)
- Due to pub quizzes, Buzz Aldrin — the second man on the Moon — is now as famous as Neil Armstrong. (In this example, dashes have been used.)
- Mrs O'Grady's other macaw (called "Billy Two") rides a motorized skateboard. (In this example, parentheses, i.e., round brackets, have been used.)
Commas, Dashes, or Parentheses?
It is your choice whether to use commas, dashes, or parentheses. Below are some guidelines:![]() commas |
![]() (pro) normal-looking sentence ![]() (con) commas are often confused with other commas in the sentence |
![]() brackets |
![]() (pro) parenthesis easily seen ![]() (con) brackets make official letters look a little unorganized |
![]() dashes |
![]() (pro) parenthesis easily seen ![]() (con) dashes look a little stark |
- Control the starkness of your parenthesis (Does it stand out? Is it unobtrusiveness?)
- Reduce the risk that commas will be confused with other commas in the sentence.
- Avoid parentheses (i.e., round brackets), which can look informal.
- Learn the different types of parenthetical punctuation to take control of the look and feel of your sentences .
Help Us Improve Grammar Monster
- Do you disagree with something on this page?
- Did you spot a typo?
Find Us Quicker!
- When using a search engine (e.g., Google, Bing), you will find Grammar Monster quicker if you add #gm to your search term.