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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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completely insane

Grammar usage guide and real-world examples

USAGE 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

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.

"It's something completely insane, which of course makes me insanely happy".

"It's like completely insane".

News & Media

The New York Times

They went completely insane.

"It's completely insane.

News & Media

The New York Times

12.44pm: Is Harrison completely insane?

"I was completely insane," he said.

"That sounds completely insane," said everyone else.

"Otherwise I would go completely insane".

News & Media

The New York Times

It's completely insane.' He pauses, composes himself.

Back then, Botox sounded completely insane, if not lethal.

News & Media

The New York Times
Show more...

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.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

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.

Expression frequency: Very common

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.

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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Source & Trust

93%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Most frequent sentences: