Definition

In a way that cannot be passed through or understood; impossible to penetrate or comprehend.

Example

The fog hung impenetrably over the valley, making it hard to see anything.

Conversation

Did you see how she responded to the criticism?

Yeah, she seemed impenetrably confident about her choices.

It's impressive how she handles pressure like that.

Definitely! I could learn a thing or two from her.

Synonyms & Antonyms

Root Explanation

Impenetrably is formed from "im-" (meaning not) and "penetrare" (meaning to enter or pierce) combined with the suffix "-ably" (meaning in a manner that can be). The word describes something that cannot be entered or pierced, hence, it is impenetrable.

Memory Tip

Think of something that cannot be 'pierced' or 'entered' — 'im-' means not, and 'penetrare' means to enter. This helps you remember that impenetrably describes something that is impossible to penetrate.

Visually Confused Words