a knave is a form of:

Knave



noun
1.
(a rogue, a jack in a deck of playing cards) ក្មេងឆបោក
ENGLISH MEANING
noun
1.
A boy; especially, a boy servant.
2.
Any male servant; a menial.
3.
A tricky, deceitful fellow; a dishonest person; a rogue; a villain.
4.
A playing card marked with the figure of a servant or soldier; a jack.