lunacy

USAGE SUMMARY

The phrase "lunacy" is correct and usable in written English.
It can be used to describe extreme foolishness or irrational behavior. Example: "His decision to invest all his savings in that failing business was pure lunacy."

✓ Grammatically correct

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Love me!" There is one exception to this lunacy.

The Guardian

The European commission has described as "total lunacy" a claim that Northampton University was fined by Brussels for not flying the European Union flag despite it getting European funding.

The Guardian

There were 15 yellows (or at least there were when this column lost count) in a game that was a cheat-fest, packed with scything challenges, dreadful dives, utter lunacy, appalling refereeing, and some shameful play-acting.

The Guardian - Sport

Even though he knew the idea was "lunacy, a one-way ticket to death", he realised that most people believed it was the best place to seek shelter.

The Guardian

Not by all the frothy-mouthed lunacy on display, but the fact that newspapers even existed.

The Guardian

I come from a superstitious lot, with a grandmother and mother who not only did the standards – knocking wood, throwing salt, gathering four-leaf clovers, U-turning if a black cat crossed their paths – but also practiced a more homespun lunacy that included wrapping red ribbons around our wrists, stowing sugar in drawers, and assorted bizarre rituals to counter The Evil Eye.

The Guardian

Later he expands on the lunacy that would seize him while in the grip of the old pop'n'chop: "I'd get to midnight and I'd say, 'Fuck it, let's go to Guernsey', then wake up and wonder why the hell I was there".

The Guardian

The bombast of UK X Factor, meanwhile, has a cheeky knowingness to it, thanks to Peter Dickson's voiceover and Walsh's innate sense of lunacy.

The Guardian - TV & Radio

When Ken Clarke as justice minister tried to rein back this lunacy, David Cameron sacked him.

The Guardian - Opinion

"Beautiful lunacy," El País calls it.

The Guardian - Sport

Nevertheless, though the trigger was the same, the details are significantly different, according to Eric Tohver of the University of Western Australia.In this section Small but deadly A la recherche du temps inconnu Mostly harmless Putting down roots Lunacy?

The Economist

Expert writing Tips

Best practice

Use "lunacy" to describe actions or ideas that are not only foolish but also border on being irrational or insane. The word carries a strong connotation of misguided thinking.

Common error

While "lunacy" is acceptable in many contexts, avoid using it in highly formal or professional settings where a more neutral term like "folly" or "irrationality" would be more appropriate. Consider your audience and the overall tone of your writing.

Linguistic Context

The primary grammatical function of "lunacy" is as a noun. It typically functions as a subject, object, or complement in a sentence, denoting a state of insanity or extreme foolishness. Ludwig shows numerous examples of it being used to describe actions or decisions deemed irrational.

Expression frequency: Very common

Frequent in

News & Media

65%

Formal & Business

20%

Science

10%

Less common in

Academia

3%

Encyclopedias

1%

Wiki

1%

Ludwig's WRAP-UP

In summary, "lunacy" is a noun denoting insanity or extreme foolishness, commonly used to express disapproval. Ludwig AI confirms its grammatical correctness and provides numerous examples, mainly from News & Media sources. While acceptable in many contexts, it's best to avoid it in highly formal settings. Related terms include "insanity", "madness", and "folly", each with slightly different connotations. When using "lunacy", consider the tone and audience to ensure the most appropriate expression of your intended meaning.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

insanity

A direct synonym referring to a state of being seriously mentally ill; implies a more severe and potentially clinical condition than "lunacy".

madness

Similar to "insanity", but can also refer to a state of wild excitement or uncontrolled behavior, providing a slightly broader application.

craziness

An informal synonym implying erratic or nonsensical behavior, offering a less formal and more colloquial tone.

irrationality

Specifically denotes the lack of reason or logical thinking, focusing on the intellectual aspect of the behavior.

folly

Emphasizes the foolishness or lack of good sense behind an action or idea, rather than a state of mental derangement.

foolishness

Stresses the lack of wisdom or intelligence in an action, presenting a milder and more general term for unwise behavior.

absurdity

Highlights the ridiculous or illogical nature of something, focusing on its deviation from reason or common sense.

sheer idiocy

Emphasizes the extreme lack of intelligence or good judgment, indicating a high degree of foolishness or stupidity.

mental derangement

A more clinical-sounding term referring to a disturbance in mental faculties, suitable for formal or medical contexts.

crackpot idea

An informal term for a plan or suggestion that is utterly impractical and foolish; implies the originator is eccentric or misguided.

FAQs

How can I use "lunacy" in a sentence?

You can use "lunacy" to describe something deeply misguided or insane. For example, "Investing all your savings in that venture would be pure "lunacy"".

What's a less formal synonym for "lunacy"?

A less formal synonym for "lunacy" is "craziness", which is suitable for casual conversations and informal writing.

Which is correct, "lunacy" or "insanity"?

Both "lunacy" and "insanity" are correct, but "insanity" often implies a more severe or clinical mental condition, while "lunacy" can also refer to general foolishness.

What is the difference between "lunacy" and "folly"?

"Lunacy" suggests a state of madness or extreme foolishness, while "folly" implies a lack of good sense or wisdom, without necessarily suggesting mental instability.