With many turns and changes of direction; not direct or simple. (Cambridge Dictionary)
Full of twists and turns. (Oxford Dictionary)
Excessively lengthy and complex. (Oxford Dictionary)
Marked by repeated twists, bends, or turns: Winding. (Merriam – Webster)
A tortuous road is full of bends and twists. (Collins Dictionary)
A tortuous process or piece of writing is very long and complicated. (Collins Dictionary)
Meaning of Tortuous. Word pandit.
Word Fact: What Is the Difference Between Torturous and Tortuous?