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
unheard of
Grammar usage guide and real-world examplesUSAGE SUMMARY
"unheard of" is correct and usable in written English.
You can use it to express something extraordinary or something that is surprising in its rarity. For example: "It was unheard of for the team to win three championships in a row."
✓ Grammatically correct
News & Media
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
52 human-written examples
Unheard of.
News & Media
"It was unheard of".
News & Media
"That's unheard of".
News & Media
Hugs are unheard of.
News & Media
And that's unheard of".
News & Media
"That's unheard of here".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
8 human-written examples
Almost unheard-of".
News & Media
Renunciation is not unheard-of.
News & Media
It's an unheard-of ability.
News & Media
Such efficiency is unheard-of in India.
News & Media
Bribery offers are not unheard-of.
News & Media
Expert writing Tips
Best practice
When using "unheard of", ensure the context clearly establishes what is considered normal or expected to highlight the exceptional nature of the subject.
Common error
Avoid using "unheard of" to describe situations that are merely surprising or unusual, but not truly unprecedented. Overusing it dilutes its impact and diminishes its effectiveness.
Source & Trust
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "unheard of" is as a predicate adjective, modifying a noun or pronoun to describe its exceptional or unprecedented nature. As Ludwig AI explains, it suggests that something is extremely rare or outside the bounds of normal experience.
Frequent in
News & Media
85%
Formal & Business
5%
Wiki
5%
Less common in
Science
2%
Encyclopedias
1%
Reference
1%
Ludwig's WRAP-UP
In summary, "unheard of" is a versatile predicate adjective used to emphasize the exceptional and unprecedented nature of something. Ludwig AI confirms that it's grammatically correct and widely used, especially in News & Media, highlighting the surprise and rarity of a situation. While it maintains a neutral register, its impact is most effective when used accurately, avoiding overuse in merely unusual contexts. Remember that phrases like "unprecedented" or "extraordinary" can serve as alternatives, depending on the specific nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
unprecedented
Focuses on the lack of prior instances, emphasizing its novelty.
unimaginable
Highlights the difficulty in conceiving or believing something.
extraordinary
Stresses the exceptional nature and rarity of the occurrence.
remarkable
Emphasizes the noteworthiness and unusual quality of the situation.
novel
Indicates the newness and originality of the event or concept.
unconventional
Highlights the deviation from established norms or practices.
out of the ordinary
Suggests a departure from the typical or expected.
unique
Emphasizes the singular and unmatched nature of the occurrence.
singular
Highlights the exceptional and distinctive quality.
exceptional
Focuses on the outstanding and superior quality.
FAQs
How can I use "unheard of" in a sentence?
You can use "unheard of" to describe something that is exceptional or unprecedented. For example: "It's "unheard of" for a rookie to win the championship."
What's a less formal way to say "unheard of"?
Depending on the context, you could use phrases like "unbelievable", "outrageous", or "remarkable" as less formal alternatives to "unheard of".
Is it correct to say "seldom heard of" instead of "unheard of"?
While "seldom heard of" is grammatically correct, it doesn't convey the same sense of extreme rarity or unprecedented nature as ""unheard of"". They have different nuances.
What's the difference between "unprecedented" and "unheard of"?
"Unprecedented" means having no prior instance, while ""unheard of"" implies something is so unusual it's virtually unknown. "Unprecedented" focuses on the lack of a previous occurrence, while "unheard of" emphasizes the surprise and rarity.
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
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested