a lean, swarthy fellow was peering through the window, grinning impudently.
Examples of impudently
impudently
Impudently, I asked the then boss why it was that ABC managers never got the boot.
From the smh.com.au
You could be a Washington or a Jefferson or, impudently, a Robert E. Lee.
From the time.com
He was, however, not known for his diplomatic demeanour, and acted impudently on occasion.
From the en.wikipedia.org
At the beginning of the interrogation, he impudently denies the obvious.
From the time.com
Jugurtha impudently bribed the Romans into accepting his usurpation.
From the en.wikipedia.org
When the new Macedonian king, Alexander, was about to attack Thebes, Demosthenes protested impudently.
From the en.wikipedia.org
To speak to them rashly, to do anything before them obscenely, slovenly, impudently is to dishonour.
From the en.wikipedia.org
Maia Usova and Alexander Zhulin, also from the Unified Team, skated lightly and impudently to the bronze.
From the time.com
Crowding the service box impudently, Chang taunted Lendl into double faulting away the closing point in the last 6-3 set.
From the time.com
More examples
Impertinently: in an impudent or impertinent manner; "a lean, swarthy fellow was peering through the window, grinning impudently"
(impudence) an impudent statement
(impudence) crust: the trait of being rude and impertinent; inclined to take liberties
(impudent) marked by casual disrespect; "a flip answer to serious question"; "the student was kept in for impudent behavior"
(impudent) fresh: improperly forward or bold; "don't be fresh with me"; "impertinent of a child to lecture a grownup"; "an impudent boy given to insulting strangers"; "Don't get wise with me!"
Rudeness (also called impudence or effrontery) is a display of disrespectfulness by not complying with the social "laws" or etiquette of a group or culture. These laws been established as the essential boundaries of normally accepted behavior. ...
In an impudent manner; with unbecoming assurance; shamelessly
(impudent) Not showing due respect; impertinent; bold-faced
(impudent) (adj.) casually rude, insolent, impertinent (The impudent young woman looked her teacher up and down and told him he was hot.)