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
obviously crazy
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "obviously crazy" is correct and usable in written English.
It can be used to describe someone or something that is clearly irrational or nonsensical, often in a casual or informal context. Example: "His idea to jump off the roof with a parachute seemed obviously crazy to everyone in the room."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(3)
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
17 human-written examples
Which is obviously crazy.
News & Media
He's obviously crazy".
News & Media
Some are obviously crazy about her.
News & Media
We were obviously crazy, he said, and he approved.
News & Media
Jason Clarke is Howard, the more obviously crazy hillbilly brother.
News & Media
Opponents of further enlargement of the EU may be wrong, but they are not obviously crazy.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
43 human-written examples
It's obviously a crazy idea but we think it can be huge.
News & Media
It will obviously be crazy in the British media between now and Friday, but when I reached the last four on four occasions it was a lot easier than people think to block it all out.
News & Media
That's obviously a crazy amount to pay for a speaker bar and a subwoofer, but Bose is expensive for a reason: the speakers pump out good enough audio in a package that requires absolutely no fiddling.
News & Media
I obviously went crazy.
News & Media
EYE: I'm obviously a Crazy Sexy fan.
News & Media
Expert writing Tips
Best practice
Use "obviously crazy" to express a strong sense of disbelief or disagreement with an idea or action. It's most effective when you want to convey a sense of incredulity.
Common error
While acceptable in many situations, "obviously crazy" might be too informal for academic papers or professional reports. Opt for alternatives like "patently absurd" or "clearly irrational" in those settings.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "obviously crazy" functions as an adverb-adjective combination modifying a noun or pronoun. It serves to emphasize the extreme irrationality or absurdity of something. Ludwig confirms that it is grammatically correct.
Frequent in
News & Media
75%
Academia
15%
Wiki
10%
Less common in
Formal & Business
0%
Science
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "obviously crazy" is a common and grammatically sound phrase used to describe something as clearly irrational or absurd. As Ludwig indicates, its usage is correct and frequently appears in news and media, though it also finds its way into academic and wiki contexts. While effective for expressing strong disbelief or amusement, it's important to consider the formality of the situation and opt for alternatives like "clearly insane" or "patently absurd" in more formal settings. Be mindful of overusing the phrase, especially in contexts where sensitivity is paramount.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
clearly insane
Directly addresses the mental state, suggesting a lack of sanity.
undeniably irrational
Stresses the lack of reason and logic.
unmistakably mad
Emphasizes that the craziness is clear and cannot be mistaken.
patently absurd
Emphasizes the absurdity to a greater degree, implying something is ridiculously unreasonable.
certainly nonsensical
Focuses on the lack of sense or meaning.
evidently deranged
Suggests a state of mental imbalance or madness.
blatantly ridiculous
Highlights the ridiculousness, making it impossible to ignore.
distinctly lunatic
Implies a wild or eccentric form of craziness.
plainly ludicrous
Focuses on the silliness and absurdity of the subject.
manifestly preposterous
Indicates something is utterly absurd and beyond belief.
FAQs
What does "obviously crazy" mean?
The phrase "obviously crazy" means something is clearly irrational, nonsensical, or foolish. It suggests the idea or action in question is easily perceived as being mad or absurd.
How can I use "obviously crazy" in a sentence?
You can use "obviously crazy" to describe ideas, actions, or even people. For example, "His plan to swim across the ocean was "obviously crazy"."
Which is more formal, "obviously crazy" or "clearly insane"?
Clearly insane is generally considered more formal than "obviously crazy". "Obviously crazy" is suitable for informal contexts, while "clearly insane" might be preferable in professional or academic writing.
Are there situations where using "obviously crazy" would be inappropriate?
Yes, using "obviously crazy" could be inappropriate in situations where sensitivity and tact are required. In formal or professional environments, or when discussing serious topics, it's best to use more neutral and respectful language.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested