Is Knavish a Word?

like or befitting a knave; untrustworthy; dishonest.

What is a knavish person?

: of, relating to, or characteristic of a knave especially : dishonest.

What does knavish sprite mean?

The words the fairy uses to describe him are 'shrewd', 'knavish' and 'sprite'. Shrewd because she thinks that he is very mean and nasty and the knavish meaning the fairy thinks he's childish and quite naïve because he doesn't know the outcome of his actions and how they may hurt people.