convoluted, gnarled, problematical, gnarly, knotty, baffling, elusive, tortuous, crooked, knotted, tangled, snarled, tough, involved, problematic, snarly.
He rubs grimly his grappling hands, knobbed
or numb claw, as it is called by fishermen, is sometimes on the right and sometimes on the left, indifferently.
Outside, rubicund Thomas with heavily knobbed
cane awaits her.