impenetrable

USAGE SUMMARY

The word 'impenetrable' is correct and usable in written English.
You can use 'impenetrable' as an adjective to describe something that cannot be entered or penetrated, or that is impossible to understand. For example, "He was facing an impenetrable wall of bureaucracy that prevented him from getting the help he needed."

✓ Grammatically correct

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

In 158 pages of adverts, sponsored features, ministerial forewords and articles from academics and think tank fellows, there's a barrage of impenetrable corporate management speak concerned with "growth", "free trade" and "economic governance".

The Guardian

The first aim was, in the new spirit of socialism sweeping the land under Mitterrand, to demystify the impenetrable secrets of official France.

The Guardian

As I gazed at this seemingly impenetrable 935m-high wall of rock, my sentiments echoed those of Miss Jemima, who noted: "We were hard put to discover a path, or to understand how we should reach its summit".

The Guardian - Travel

We have marked the very corporate-like environment we work in – all straight lines, uniform spaces, impenetrable concrete, unbending steel – with signs of alternative voices, thoughts-in-the-making and issues up for debate.

The Guardian

I have provided financial advice to a host of doctors, nurses and service managers and guided them through baffling spreadsheets and often impenetrable jargon to enable them to best use the resources at their disposal (time, money and human beings) to deliver the highest quality of care for their patients.

The Guardian

As its common name, firethorn, suggests, pyracantha makes an excellent impenetrable barrier: the ultimate plant in home security.

The Guardian - Lifestyle

In frame after frame, Thatcher meets Jane's gaze head-on, the public persona as impenetrable as armour.

The Guardian - Arts

According to the usual phalanx of unnamed insiders, eager to breach the impenetrable wall of secrecy and reserve surrounding a woman who has agreed to have her uterus cleaned out on national television, the Kardashian-Wests have employed "a brigade of baby experts" to help them conceive.

The Guardian - Lifestyle

It's a stimulating way to learn how to make compelling stories out of otherwise dry or impenetrable material.

The Guardian

Elsewhere, there are a bewildering number of new tax reliefs and exemptions, which will make the UK's impenetrable tax code still more complicated.

The Guardian

You might remember the impenetrable Donnie Darko website from first time around: it's suitably mysterious and vague and the whole thing is laden with Flash animation that'll test your patience way more than the film's plot.

The Guardian - Film

Expert writing Tips

Best practice

When describing abstract concepts or arguments, use "impenetrable" to convey a lack of clarity or understanding. For physical barriers, consider more specific terms like "impassable" or "impervious" for enhanced precision.

Common error

Avoid using "impenetrable" when something is simply difficult to understand. "Impenetrable" suggests a complete barrier to comprehension, not just a challenge.

Linguistic Context

The primary grammatical function of "impenetrable" is as an adjective. It modifies nouns to describe their quality of being impossible to penetrate physically or difficult to understand. Ludwig AI confirms this usage through numerous examples illustrating its application in diverse contexts.

Expression frequency: Very common

Frequent in

News & Media

45%

Formal & Business

20%

Science

15%

Less common in

Academia

5%

Encyclopedias

5%

Wiki

5%

Ludwig's WRAP-UP

In summary, "impenetrable" functions as an adjective primarily used to describe something that is impossible to penetrate or understand. Ludwig AI affirms its correct and frequent usage across various domains, including news, business, and science. While generally neutral to formal, it's crucial to select more specific terms when describing physical barriers for increased precision. Avoid using "impenetrable" when something is merely difficult to comprehend, as it implies a complete barrier. As Ludwig's examples show, the term effectively conveys the presence of a significant obstacle, whether tangible or abstract.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

unfathomable

Focuses on the inability to be fully explored or understood, often relating to abstract concepts.

incomprehensible

Emphasizes the difficulty or impossibility of understanding something.

impervious

Highlights the inability to be affected or harmed, suggesting a resistance to penetration.

impassable

Specifically denotes the inability to be traveled through or crossed, typically used for physical barriers.

unpierceable

Focuses on the inability to be pierced or punctured, suggesting a strong physical resistance.

hermetic

Implies a complete and airtight closure, preventing any passage or leakage.

opaque

Highlights the lack of transparency, either physically or metaphorically, making something difficult to see through or understand.

inaccessible

Emphasizes the difficulty or impossibility of reaching or entering a place or understanding something.

invulnerable

Focuses on the inability to be harmed or damaged, suggesting a strong resistance to attack.

impregnable

Highlights the strength of a defensive position that cannot be overcome by attack.

FAQs

How can I use "impenetrable" in a sentence?

You can use "impenetrable" to describe something that cannot be entered or passed through, such as "an impenetrable fortress". You can also use it metaphorically to describe something difficult or impossible to understand, such as "impenetrable jargon".

What can I say instead of "impenetrable"?

Depending on the context, you can use alternatives like "unfathomable", "incomprehensible", or "impervious".

Is it correct to say "an impenetrable wall"?

Yes, "an impenetrable wall" is a common and correct usage. It suggests that the wall cannot be breached or passed through.

What's the difference between "impenetrable" and "inaccessible"?

"Impenetrable" suggests that something cannot be entered or understood, while "inaccessible" means it is difficult or impossible to reach or obtain. A mountain might be "inaccessible" due to its height, while a legal document might be "impenetrable" due to its complex language.