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| Meta Title | BAD HAIR DAY Definition & Meaning - Merriam-Webster |
| Meta Description | The meaning of BAD HAIR DAY is a day when one's hair is unattractive and unmanageable; also : a bad day : a day with many problems, annoyances, etc.. How to use bad hair day in a sentence. |
| Meta Canonical | null |
| Boilerpipe Text | informal
:
a day when one's hair is unattractive and unmanageable
You think you've had a
bad hair day
? One U.S. woman has hair problems that go way beyond such ordinary complaints as split ends.
—
Science News
also
:
a bad day
:
a day with many problems, annoyances, etc.
Way back when Moses had that
bad hair day
on the mountain and broke the commandment tablets, I'm thinking when he put them all back together there was an 11th one missing.
—
Dwain Walden
Examples of
bad hair day
in a Sentence
Recent Examples on the Web
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback
.
There’s nothing like a
bad hair day
to ruin your mojo.
—
Claire West,
InStyle
, 8 Feb. 2026
Having a
bad hair day
, Kimberly almost didn't go.
—
Hannah Kirby,
jsonline.com
, 30 Jan. 2026
The environments both inside and outside create a perfect storm for
bad hair days
.
—
Helen Carefoot,
Flow Space
, 29 Jan. 2026
Status Baseball Caps What better way to combat a
bad hair day
than with a baseball cap?
—
Hannah Jackson,
Vogue
, 19 Nov. 2025
See All Example Sentences for
bad hair day
Word History
First Known Use
1970, in the meaning defined
above
Time Traveler
The first known use of
bad hair day
was
in 1970
Browse Nearby Words
Cite this Entry
Style
“Bad hair day.”
Merriam-Webster.com Dictionary
, Merriam-Webster, https://www.merriam-webster.com/dictionary/bad%20hair%20day. Accessed 23 Mar. 2026.
Last Updated:
10 Feb 2026
- Updated example sentences
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
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# bad hair day
## [noun](https://www.merriam-webster.com/dictionary/noun)
informal
**:** a day when one's hair is unattractive and unmanageable
You think you've had a bad hair day? One U.S. woman has hair problems that go way beyond such ordinary complaints as split ends.
—
*Science News*
also **:** a bad day **:** a day with many problems, annoyances, etc.
Way back when Moses had that bad hair day on the mountain and broke the commandment tablets, I'm thinking when he put them all back together there was an 11th one missing.
—
Dwain Walden
## Examples of *bad hair day* in a Sentence
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. [Read More](https://www.merriam-webster.com/dictionary/bad%20hair%20day) Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. [Send us feedback](https://docs.google.com/forms/d/1GAQr3Kn1cURCVHUA82hAga1Wv8DCH0IuqDLRUrOpN7M/viewform?ts=63f4f653&entry.1515682415=https://www.merriam-webster.com/dictionary%2Fbad%20hair%20day).
There’s nothing like a *bad hair day* to ruin your mojo.
—
Claire West, *InStyle*, 8 Feb. 2026
Having a *bad hair day*, Kimberly almost didn't go.
—
Hannah Kirby, *jsonline.com*, 30 Jan. 2026
The environments both inside and outside create a perfect storm for *bad hair days*.
—
Helen Carefoot, *Flow Space*, 29 Jan. 2026
Status Baseball Caps What better way to combat a *bad hair day* than with a baseball cap?
—
Hannah Jackson, *Vogue*, 19 Nov. 2025
[See All Example Sentences for *bad hair day*](https://www.merriam-webster.com/sentences/bad%20hair%20day)
## Word History
First Known Use
1970, in the meaning defined [above](https://www.merriam-webster.com/dictionary/bad%20hair%20day#h1)
Time Traveler
The first known use of *bad hair day* was in 1970
[See more words from the same year](https://www.merriam-webster.com/time-traveler/1970?src=defrecirc-timetraveler-etycard)
## Rhymes for *bad hair day*
- [aaa](https://www.merriam-webster.com/dictionary/aaa)
- [adonais](https://www.merriam-webster.com/dictionary/adonais)
- [alleyway](https://www.merriam-webster.com/dictionary/alleyway)
- [alumnae](https://www.merriam-webster.com/dictionary/alumnae)
- [anime](https://www.merriam-webster.com/dictionary/anime)
- [anyway](https://www.merriam-webster.com/dictionary/anyway)
- [arete](https://www.merriam-webster.com/dictionary/arete)
- [attache](https://www.merriam-webster.com/dictionary/attache)
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- [beaujolais](https://www.merriam-webster.com/dictionary/beaujolais)
- [bouvier](https://www.merriam-webster.com/dictionary/bouvier)
- [breakaway](https://www.merriam-webster.com/dictionary/breakaway)
[See All Rhymes for *bad hair day*](https://www.merriam-webster.com/rhymes/perfect/bad%20hair%20day)
## Browse Nearby Words
[bad guy](https://www.merriam-webster.com/dictionary/bad%20guy)
bad hair day
[badhan](https://www.merriam-webster.com/dictionary/badhan)
[See all Nearby Words](https://www.merriam-webster.com/browse/dictionary/b/4)
## Cite this Entry
Style
“Bad hair day.” *Merriam-Webster.com Dictionary*, Merriam-Webster, https://www.merriam-webster.com/dictionary/bad%20hair%20day. Accessed 23 Mar. 2026.
[Copy Citation](https://www.merriam-webster.com/dictionary/bad%20hair%20day)
Last Updated:
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\- Updated example sentences
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| Readable Markdown | informal
**:** a day when one's hair is unattractive and unmanageable You think you've had a bad hair day? One U.S. woman has hair problems that go way beyond such ordinary complaints as split ends.— *Science News*
also **:** a bad day **:** a day with many problems, annoyances, etc.
Way back when Moses had that bad hair day on the mountain and broke the commandment tablets, I'm thinking when he put them all back together there was an 11th one missing. — Dwain Walden
Examples of *bad hair day* in a Sentence
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. [Read More](https://www.merriam-webster.com/dictionary/bad%20hair%20day) Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. [Send us feedback](https://docs.google.com/forms/d/1GAQr3Kn1cURCVHUA82hAga1Wv8DCH0IuqDLRUrOpN7M/viewform?ts=63f4f653&entry.1515682415=https://www.merriam-webster.com/dictionary%2Fbad%20hair%20day).
There’s nothing like a *bad hair day* to ruin your mojo. — Claire West, *InStyle*, 8 Feb. 2026 Having a *bad hair day*, Kimberly almost didn't go. — Hannah Kirby, *jsonline.com*, 30 Jan. 2026 The environments both inside and outside create a perfect storm for *bad hair days*. — Helen Carefoot, *Flow Space*, 29 Jan. 2026 Status Baseball Caps What better way to combat a *bad hair day* than with a baseball cap? — Hannah Jackson, *Vogue*, 19 Nov. 2025 [See All Example Sentences for *bad hair day*](https://www.merriam-webster.com/sentences/bad%20hair%20day)
Word History
First Known Use
1970, in the meaning defined [above](https://www.merriam-webster.com/dictionary/bad%20hair%20day#h1)
Time Traveler
The first known use of *bad hair day* was in 1970
Browse Nearby Words
Cite this Entry
Style
“Bad hair day.” *Merriam-Webster.com Dictionary*, Merriam-Webster, https://www.merriam-webster.com/dictionary/bad%20hair%20day. Accessed 23 Mar. 2026.
Last Updated: 10 Feb 2026 - Updated example sentences
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free\!
[Merriam-Webster unabridged](https://unabridged.merriam-webster.com/check-redirect-premium?utm_source=mw&utm_medium=inline-def&utm_campaign=evergreen&headword=bad%20hair%20day)
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| Shard | 122 (laksa) |
| Root Hash | 12021194709005532322 |
| Unparsed URL | com,merriam-webster!www,/dictionary/bad%20hair%20day s443 |