Though I do not doubt that Wormtongue at home wrapped their meaning in terms more cunning.
And he entered the service of the Dark Tower when it first rose again, and because of his cunning he grew ever higher in the Lord’s favour; and he learned great sorcery, and knew much of the mind of Sauron; and he was more cruel than any orc.
Treebeard gave Gandalf a long look, a most cunning look, Merry thought.
Its eastern face stood up in three great tiers from a shelf in the mountain-wall far below; its back was to a great cliff behind, from which it jutted out in pointed bastions, one above the other, diminishing as they rose, with sheer sides of cunning masonry that looked north-east and south-east.
Then Eowyn gave to Merry an ancient horn, small but cunningly wrought all of fair silver with a baldric of green; and wrights had engraven upon it swift horsemen riding in a line that wound about it from the tip to the mouth; and there were set runes of great virtue.
There are no more uses of "cunning" in the book.
Show samples from other sources
She came up with a cunning scheme to cheat him.
The worst mix — greedy, cunning, and without morals.