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afterthought

American  
[af-ter-thawt, ahf-] / ˈæf tərˌθɔt, ˈɑf- /

noun

  • afterthoughts
    plural
  1. a later or second thought; reconsideration.

  2. reflection after an act; an appropriate explanation, answer, expedient, or the like, conceived of too late for the occasion.

  3. something added, as a part or feature, that was not included in the original plan or design.

    The vestry was added to the church as an afterthought.


afterthought British  
/ ˈɑːftəˌθɔːt /

noun

  1. a comment, reply, etc, that occurs to one after the opportunity to deliver it has passed

  2. an addition to something already completed

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms


Etymology

Origin of afterthought

First recorded in 1655–65; after + thought 1


Explanation

An afterthought is something you think of or add later. You might quickly wrap a gift and then stick a bow on it as an afterthought just before you hand it to the birthday boy. Sometimes calling something an afterthought is a bit of an insult — a movie reviewer might complain that female characters seem added on as afterthoughts, or a diner at a fancy restaurant could note that while the meat is well-cooked, the vegetables are nothing but an afterthought. This word has been used since the 1600s, a compound of after and thought.

Keep Reading on Vocabulary.com

Vocabulary lists containing afterthought

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

"Clinicians should treat adherence to GLP-1 treatment as an important outcome in its own right -- not an afterthought," Al-Aly said.

From Science Daily ● Sep. 21, 2026

They weren’t an afterthought; their interests were not considered at all.

From Slate ● Sep. 15, 2026

Many now treat their nonalcoholic menus not as an afterthought but as another place to show creativity.

From Salon ● Aug. 15, 2026

"As we deliver our reforms to policing, we will ensure that their wellbeing is prioritised, protected and never treated as an afterthought."

From BBC ● Jul. 29, 2026

Then again the revealing afterthought: “Yet all this I can do.”

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

So these are not just sort of weird random afterthoughts or vestiges.

From Slate ● Aug. 17, 2026

The viewer’s in for an unexpected twist, too, seeing as all of these characters but Rachel will soon be afterthoughts, tossed aside to maintain a constant laser focus on Marty’s hijinks.

From Salon ● Dec. 25, 2025

Except the Patriots are hardly alone in their journey from early-season afterthoughts to division leaders.

From The Wall Street Journal ● Nov. 10, 2025

Following his death, some wondered if he had wound up in a rough-and-tumble league where skill and technique are afterthoughts.

From Seattle Times ● Nov. 30, 2023

He ate hot eggs, warm bread, reveled in steaming tea, although the water from which the tea was made left an aftertaste in the mouth, afterthoughts in the brain: from what nearby bam?

From "The Killer Angels: The Classic Novel of the Civil War" by Michael Shaara

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