stenotic (in medical terms)
The lawyer's dilatory tactics delayed the trial for months, frustrating both the judge and the opposing party.
tortuous
The climb up the mountain was tortuous and brutal.
The tortuous climb wore me out.
the two words are not connected; tortuous means suffering and pain.
1. slow: tending to waste time or move slowly 2. intended to delay: intended to cause a delay or waste time
The U.S. Marine Corps' obstacle course is touted as being quite tortuous. My dental exam was so tortuous that I actually had muscle cramps afterward.
The noun form for the adjective tortuous is tortuousness. Another noun form is torture.
A mountain road is tortuous. My singing is torturous. And when I violate a contract I am being tortious.
The dilatory effect of motion on time was addressed first by EInstein in 1905. However this is a sentence known as "clumbsy". "Time dilation is a consequence of motion" is much better. I know of no good use for the word really, unless as a category, eg, Dilatory Agents: v Contractile Agenty.
severe
twisted vessels