Difference between Sly and Knavish

SLY vs KNAVISH: ADJECTIVE

Clever or cunning, especially in the practice of deceit.
Stealthy or surreptitious.
Playfully mischievous.
Marked by skill in deception
Artfully cunning; secretly mischievous; wily.
Done with, and marked by, artful and dexterous secrecy; subtle.
Light or delicate; slight; thin.
In a sly or secret manner.
The common sheldrake; -- so named from its craftiness.
Dexterous in performing an action, so as to escape notice; nimble; skillful; cautious; shrewd; knowing; -- in a good sense.

Marked by skill in deception
Like or characteristic of a knave{3}; given to knavery; trickish; fraudulent; dishonest; villainous.
Mischievous; roguish; waggish; rascally.
Having the characteristics of a knave; mischievous, roguish, waggish, rascally or impertinent

Synonyms Trickish, rascally, unprincipled.
Roguish; waggish; mischievous.
Like a knave; suited to a knave; tricky; dishonest; fraudulent: as, a knavish fellow; a knavish trick.

Devious, Subtle, Sneaky, Clever, Tricky, Slick, Dodgy, Knavish, Tricksy, Guileful, Foxy, Artful, Wily, Crafty, Cunning

Rascally, Mischievous, Devious, Roguish, Tricky, Slick, Artful, Tricksy, Dodgy, Crafty, Wily, Foxy, Guileful, Sly, Cunning

Devious, Subtle, Sneaky, Clever, Tricky, Slick, Dodgy, Knavish, Tricksy, Guileful, Foxy, Artful, Wily, Crafty, Cunning

Rascally, Mischievous, Devious, Roguish, Tricky, Slick, Artful, Tricksy, Dodgy, Crafty, Wily, Foxy, Guileful, Sly, Cunning

Franklin, a sly and crafty politician, counseled patience.
If till define arran sly height conversion disegni.
It all felt like a sly, human taunt.
He had a sly, deadpan sense of humor.
Jake, looking at Tellman with a sly smile.
He is not power hungry, selfish, or sly.
All sly, and wanting something out of you.
Xavier looked at him with a sly smile.
David Sly, director of Falk College career services.
Enter aloft SLY, with ATTENDANTS; some with apparel, basin and ewer, and other appurtenances; and LORD SLY.

If he should be detected in any knavish pranks I will make the country too warm for him to remain in.
If they choose knaves, they will have knavish ones.
Roman, a name which amongst us denotes whatever is base, cowardly, sordid, depraved, and knavish.