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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
completely insane
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "completely insane" is correct and usable in written English.
You can use it to emphasize that someone or something is irrational or absurd beyond belief. For example, "Her reaction to the news was completely insane - she jumped up and started shouting!".
✓ Grammatically correct
News & Media
Alternative expressions(15)
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
60 human-written examples
When he first met Jessica in Albuquerque, "she realised I lived in complete squalor and I was completely insane.
News & Media
"It's something completely insane, which of course makes me insanely happy".
News & Media
"It's like completely insane".
News & Media
They went completely insane.
News & Media
"It's completely insane.
News & Media
12.44pm: Is Harrison completely insane?
News & Media
"I was completely insane," he said.
News & Media
"That sounds completely insane," said everyone else.
News & Media
"Otherwise I would go completely insane".
News & Media
It's completely insane.' He pauses, composes himself.
News & Media
Back then, Botox sounded completely insane, if not lethal.
News & Media
Expert writing Tips
Best practice
When writing dialogue, "completely insane" can effectively reveal a character's strong emotional reaction or judgment, adding depth to their personality.
Common error
Avoid using "completely insane" in highly formal or professional writing. While impactful, it can sound unprofessional. Opt for alternatives like "utterly illogical" or "entirely unreasonable" for a more appropriate tone.
Source & Trust
93%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "completely insane" functions as an adjectival phrase, modifying a noun or pronoun to describe something as irrational, absurd, or nonsensical. Ludwig AI confirms its usability and correctness. Examples show its use in expressing strong disapproval.
Frequent in
News & Media
100%
Less common in
Formal & Business
0%
Science
0%
Academia
0%
Ludwig's WRAP-UP
The phrase "completely insane" is a common and grammatically sound adjectival phrase used to express strong disapproval or disbelief toward something perceived as utterly irrational or absurd. As Ludwig AI confirms, it's widely used and understood, predominantly in News & Media contexts. While effective for conveying strong emotions, it may be too informal for highly formal writing. Consider alternatives like "utterly illogical" or "entirely unreasonable" for more professional settings. When used appropriately, "completely insane" can add impact and reveal character perspectives in various forms of communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
utterly mad
This alternative uses "mad" instead of "insane", suggesting a strong degree of irrationality or foolishness.
totally irrational
This alternative focuses on the lack of reason or logic, rather than mental instability.
absolutely ludicrous
This alternative emphasizes the absurdity and ridiculousness of something.
entirely preposterous
This alternative suggests something is so absurd as to be unbelievable.
wholly absurd
This alternative uses "absurd" to highlight the nonsensical nature of something.
completely daft
This alternative uses "daft", suggesting foolishness or silliness.
patently absurd
This alternative highlights the obvious nature of the absurdity.
plainly crazy
This alternative uses "crazy" to indicate irrational behavior or ideas.
downright bananas
This alternative uses a more informal, humorous expression to describe something crazy.
certifiably loony
This alternative emphasizes a proven or extreme level of craziness.
FAQs
How can I use "completely insane" in a sentence?
You can use "completely insane" to describe something you find utterly irrational or absurd. For example, "His proposal to cut the budget by 90% is "completely insane"."
What are some alternatives to "completely insane"?
Depending on the context, you could use alternatives such as "utterly mad", "totally irrational", or "absolutely ludicrous".
Is it appropriate to use "completely insane" in formal writing?
While grammatically correct, "completely insane" might be too informal for some formal contexts. Consider using more professional alternatives such as "entirely unreasonable" or "wholly illogical".
What's the difference between "completely insane" and "perfectly insane"?
"Completely insane" emphasizes the totality of the insanity, meaning something is entirely irrational. "Perfectly insane", while less common, can imply a flawless execution of something crazy or a state of utter madness.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
93%
Authority and reliability
4.6/5
Expert rating
Real-world application tested