The English language is full of tortuous twists that can be torturous pain on the strongest mind.
Tortuous [THINK: circuitous (uous)]
Torturous [THINK: torture]
“…tortuous, defined as “full of twists, turns, or bends.”…can also mean “not direct or straightforward, as in procedure or speech,” or “deceitfully indirect or morally crooked.”…
…torturous, which means “pertaining to, involving, or causing torture or suffering.””
[read more about it on blog.dictionary.com]