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What is the opposite of “impenetrable”?

What is the antonym of “impenetrable”?

The antonym of impenetrable is penetrable, permeable, and understandable. The antonyms penetrable, permeable, and understandable convey the opposite meaning of impenetrable, which means something that cannot be penetrated or understood.

Brief Definitions of the Antonym(s)

Learn when and how to use these words with these examples!


Capable of being penetrated or pierced.


The walls of the old castle were so weak that they were easily penetrable by enemy forces.


Allowing liquids or gases to pass through; porous.


The fabric of the raincoat was not permeable enough, and he got wet in the rain.


Able to be comprehended or grasped mentally.


The teacher explained the concept in a simple way, making it more understandable for the students.

How are these antonyms different from each other?

  • 1Penetrable refers to something that can be penetrated or pierced physically.
  • 2Permeable refers to something that allows liquids or gases to pass through.
  • 3Understandable refers to something that can be comprehended or grasped mentally.

Good things to know

  • 1Science: Use penetrable and permeable to describe the properties of materials and substances.
  • 2Literature: Use understandable to describe the clarity of writing and storytelling.
  • 3Everyday Conversation: Use these antonyms to express the opposite meaning of impenetrable in everyday conversations.

Remember this!

The antonyms have distinct nuances: Penetrable refers to physical penetration, permeable refers to the passage of liquids or gases, and understandable refers to mental comprehension. Use these words in science, literature, and everyday conversations to express the opposite meaning of impenetrable.

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