Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a unguarded
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a unguarded" is not correct in written English. It should be "an unguarded" because "unguarded" begins with a vowel sound. You can use it to describe a situation or moment that is not protected or is vulnerable. For example: "He made an unguarded comment during the meeting." Alternative expressions include "an open" and "a candid."
⚠ May contain grammatical issues
News & Media
Academia
Encyclopedias
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
But in between those goals, Clint Dempsey had popped up to side-foot his first goal as a Spurs player, off a rebound into an unguarded net.
News & Media
"I was trying to get them to relax a little, so maybe, in an unguarded moment, I got a little too relaxed myself".
News & Media
The front-runners could easily implode as a result of an unguarded moment relayed on YouTube.
News & Media
When the men ask Olive where she got their phone number, a spotlight hits an unguarded handbag at the bar.
News & Media
And Nigel Hasselbaink profited from Gunnar Nielson's goalkeeping blunder to curl a strike into an unguarded net.
News & Media
Discontent grew when in an unguarded comment before an interview with a local TV station, David Cameron said: "It's the Tamar, not the Amazon, for heaven's sake".
News & Media
Andre Iguodala played 29 minutes without a field goal, and his only shot was an embarrassing miss of an unguarded layup early in the fourth quarter.
News & Media
The Colombian crossed into the centre and Fernandes turned the ball into an unguarded net with a bicycle kick.
News & Media
There were plenty more authentic shots in his 30-ball half-century, including a second six over an unguarded long-on during the powerplay off Ravichandran Ashwin.
News & Media
Within hours of Mr Sharaf's departure, a bomb blew up an unguarded pipeline that supplies Israel and Jordan with gas.
News & Media
In May, Leon Panetta, the C.I.A.'s director, referred to the Predator program as "the only game in town" in an unguarded moment after a public lecture.
News & Media
Expert writing Tips
Best practice
Evaluate the sound of the word, not just the letter. Since "unguarded" starts with a short "u" sound (/ʌ/), it behaves like a vowel.
Common error
Writers sometimes mistakenly use "a" before all words starting with "u" because they are used to exceptions like "a university" or "a union". However, those words start with a consonant "y" sound (/j/), whereas "unguarded" starts with a vowel sound and must be preceded by "an".
Source & Trust
94%
Authority and reliability
1.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a unguarded" acts as an incorrectly formed adjective-noun modifier. In standard English, as reflected by the corrections in Ludwig, the indefinite article "a" must be replaced by "an" to facilitate phonetic flow before the vowel sound of the adjective. This construction is typically intended to modify nouns like "moment", "net" or "comment".
Frequent in
News & Media
75%
Academia
15%
Encyclopedias
10%
Less common in
Science
5%
Formal & Business
3%
Social Media
2%
Ludwig's WRAP-UP
In conclusion, "a unguarded" is a grammatical mistake that arises from a misuse of the indefinite article. According to Ludwig AI and standard English rules, the correct phrase is "an unguarded". This error often occurs because writers forget to account for the vowel sound at the beginning of the adjective. The search data reveals that high-quality sources, ranging from The New York Times to Princeton University, exclusively use the version with "an" across various contexts such as sports, politics and psychology. To improve your writing, always check if the word following the article starts with a vowel sound and choose your determiner accordingly.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
an unguarded
Uses the correct indefinite article for a word starting with a vowel sound.
an unprotected
Changes the adjective to a synonym while maintaining the correct article.
a vulnerable
Replaces the adjective with a synonym starting with a consonant, allowing the use of "a".
an open
A simpler adjective often used to describe undefended positions or nets.
an exposed
Focuses on the lack of cover or protection.
a candid
Suitable for describing personal moments or comments rather than physical objects.
a defenseless
Emphasizes the inability to resist or protect itself.
an artless
Used specifically for personality traits or expressions lacking guile.
a frank
Describes an honest or direct communication style.
a spontaneous
Describes a moment that is natural and not planned.
FAQs
Is it correct to say "a unguarded"?
No, it is not correct. Because "unguarded" starts with a vowel sound, you should use ""an unguarded"" instead.
What is a synonym for an "unguarded moment"?
You can describe it as "a vulnerable" moment or "a candid" moment, depending on whether you mean a lack of physical or emotional defense.
Why is "an" used before "unguarded"?
The rule in English is to use "an" before vowel sounds. Since the "u" in "unguarded" is pronounced as a vowel, ""an unguarded"" is the only grammatically acceptable form.
Can I use "a unguarded" in informal writing?
Even in informal contexts, "a unguarded" is viewed as a clear grammatical error. It is better to use ""an unguarded"" or "an unprotected" to ensure your writing remains clear.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
94%
Authority and reliability
1.5/5
Expert rating
Real-world application tested