anfractuous
sinuous, twisty, winding.
So intricate, ſo anfractuous, ſo unſearchable are the vvays of Providence.
craggy, rugged, coarse, rough, uneven.
Paint me the bold anfractuous rocks / Faced by the snarled and yelping seas.
Where it comes from
From Late Latin anfractuosus, from Latin anfractus (“bend, curve”).
Adapted from the Wiktionary entry anfractuous (CC BY-SA 4.0).