|Noah Webster's Dictionary|
(adv.) In a cunning manner; with cunning.
Cunningly (3 Occurrences)
2 Peter 1:16 For we did not follow cunningly devised fables, when we made known to you the power and coming of our Lord Jesus Christ, but we were eyewitnesses of his majesty. (WEB KJV ASV WBS)
2 Peter 2:1 But there were also false prophets among the people, as there will be teachers of falsehood among you also, who will cunningly introduce fatal divisions, disowning even the Sovereign Lord who has redeemed them, and bringing on themselves swift destruction. (WEY)
Psalms 64:6 They plot injustice, saying, "We have made a perfect plan!" Surely man's mind and heart are cunning. (See RSV)