Knave

Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 228

nav, n. A dishonest person; rascal: yiUiin, a playing-card marked with the figure of a servant or soldier, a jack. — KnaVery, -er-T, n. Dishonesty; petty villainy; trickery; mischievous practices. — Knav^ish, a. Knapsack. Like a knave; villainous.