devious

vilpillinen, katala

poikkeava

petollinen deviate Deviating; not straightforward or honest, not frank; not standard.
1839, Frederick Marryat, The Phantom Ship

Keeping close in to the shore, they discovered, after two hours run, a fresh stream which burst in a cascade from the mountains, and swept its devious course through the jungle, until it poured its tribute into the waters of the Strait.