impenetrable

Examples

• All

• Their glass display windows are covered with layers of impenetrable dirt.

  Fiction book (1996)

• Well, it's an impenetrable fortress, so we're gonna have to sneak in.

  Smurfs (2025)

• No castle was impenetrable, from the inside or out; her father had taught her that.

  Fiction book (2002)

• "I should have known that you would create an impenetrable defense."

  Fiction book (1991)

• Nothing all around but the huge impenetrable cloud of dust.

  Fiction book (1998)

• Rustling on the other side of that impenetrable wall.

  Fiction book (1994)

• It was an impenetrable barrier.

  Ocean to Sky (2019)

• The jungle seems impenetrable, the dark wood of fable.

  Fiction book (2000)

• Trees and twisted undergrowth form seemingly impenetrable walls to either side.

  Fiction book (2000)

• In Uganda's Bwindi Impenetrable National Park, a female gorilla dines on wild celery.

  Academic text (2003)

Synonyms

I

inaccessible

vsimpenetrable

28 7.9

Not able to be reached, used, or understood

covers being physically closed off, not only hard to reach or understand

I

impervious

vsimpenetrable

28 7.5

Not letting water pass through and not changed by words

is about blocking entry generally, not only substances or influence

I

impassable

vsimpenetrable

13 5.3

A road, path, or area you cannot travel through

is broader and applies to any barrier not only travel routes

I

impregnable

vsimpenetrable

10 7.9

Too strong and well protected for anyone to capture or defeat

speaks of not allowing entry, not only resisting defeat or conquest

I

impermeable

vsimpenetrable

4 6.6

Not allowing water or air to pass through

is broader, applying to any kind of passage or penetration

U

untouchable

vsimpenetrable

3 7.7

Too difficult for people to reach or get

is about physical prevention of entry rather than being unattainable

U

unapproachable

vsimpenetrable

1 7.1

Hard to reach because it is far away or blocked

is the broader idea of barring access, not only distant location

U

unbreachable

vsimpenetrable

1 7.7

So strong that no one can break into or get past it

is the general idea of not allowing passage or any entry

U

untraversable

vsimpenetrable

1 9.1

Not possible to cross by people or vehicles

is the wider term for any barrier blocking entry or passage

U

unpassable

vsimpenetrable

1 6.9

A road or path that people cannot cross

is the general term covering all barriers to entry or movement

I

impassible

vsimpenetrable

9.2

Impossible to travel through because obstacles block the way

is used for any object that prevents entering rather than just places

B

blocked

vsimpenetrable

1.7

Closed so nothing can pass through, for example a nose or road

indicates total blockage rather than mere difficulty of entry

B

barricaded

vsimpenetrable

5.5

Barriers block a place so people cannot enter or leave

is about any barrier, not only one placed to block access

O

obstructed

vsimpenetrable

4.6

Blocked so movement, view, or access is difficult

focuses on absolute prevention of passage rather than mere difficulty

I

inexpugnable

vsimpenetrable

9.9

No one can beat or prove it wrong

is about physical entry barriers rather than abstract invincibility

Antonyms

A

accessible

280 3.9

A place, thing, or service that you can reach and use easily

P

passable

4 3.5

A road or route you can travel because it is not blocked

P

penetrable

3 6.0

Able to be passed through or pierced

Compounds

I

impenetrable reasoning

9.9

An argument that is very hard to understand

How Penetrable

to open

∞ 1.0

penetrable

3 6.0

porous

23 4.6

impenetrable

19 7.3

Surface Forms

Morphology

Etymology