To attack violently, as with blows or military force; assault.
Challenge means to stop someone and ask for their identification.
To assert the opposite of a statement or idea put forward by (someone).
To assert that something is not true.
To contend for, as by combat:
To declare to be false; deny.
Find another word for impune. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for impune, like: assail, challenge, contradict, deny, fight, gainsay and resist.