devious
/ˈdiː.vi.əs/ adjective C1- Cunning or deceiving, not straightforward or honest, not frank.
From the library
Led on by some rudimentary aspirations towards right, and encouraged by the judicious stimulation of an occasional ten-pound note sent to him by devious methods, he has once or twice given me advance information which has been of value—that highest value which anticipates and prevents rather than avenges crime.
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