callidus

Etymology
From.

Adjective

 * 1) wise, clever, ingenious
 * 2) adroit, skilful, cunning, sly, crafty
 * 3)  discreet
 * 1) adroit, skilful, cunning, sly, crafty
 * 2)  discreet
 * 1)  discreet
 * 1)  discreet