Did you know?

Click any word in a definition or example to find the entry for that word

Pronunciation of 

impenetrable

view main entry for impenetrableadjective  /ɪmˈpenətrəb(ə)l/
Previous and next
American English pronunciation: impenetrableClick to listen to the pronunciation of impenetrable

derived word

impenetrably

adverb

Open Dictionary

garbage patch

a collection of debris, mostly consisting of plastic, which moves around in the sea …

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog