All 4 Uses

cunning
in
Mrs. Warren's Profession
(Auto-generated)

CROFTS [catching him up cunningly] You know for certain that I'm not?†
Act 1

cunningly = in a manner that is clever and typically that includes tricking others
He grins; leans forward with his elbows on his knees to prod with his stick at some unfortunate insect in the grass; and looks cunningly at her.†
Act 3 *
[With a cunning gleam in her eye] I'll double it: I was intending to double it†
Act 4

cunning = good at achieving goals through cleverness and deception
But the cunning expression comes back into Mrs Warren's face; and she bends across the table, sly and urgent, half whispering.]†
Act 4

Definitions:

(1) (cunning as in: a cunning thief)
being good at achieving goals through cleverness -- and typically through deception as well (tricking others)
(2) (meaning too rare to warrant focus)
At one time, cunning was also used as a synonym for cute.