I would settle for enervation of pain signals, but for some, would wish for denervation.

damoge, thanks for explaining this interesting nuance.

It seems that denervate has very similar meaning.

It comes from Greek via Latin and French. I wonder whether we know more about it.

Obviously it should be sinuous! I thank Slava for noticing this mistake.

... and some of its relatives: sinus, sine, sinuosity, ... . It obviously comes from Latin sinus, but is there anything anything in PIE?

It's about the West Bank.

That's a new one to me.

It's used mostly in Romance languages like Cisjordanie in French and Cisjordânia in Portuguese.

There is also Cisjordan (this side of the Jordan river); the usual term is West Bank.

Lots of this kind of behavior nowadays.

Certainly. Immunity from prosecution very often results in impunity.

This word seems to be very popular nowadays. It would be interesting to know about its origin beyond obvious Latin.

David Myer, that's exactly my point! Thank you for a better explanation.

I'm not sure about examples like

I'm just putting on my lipstick; I can't get ready to go out in a teraflop.

Teraflop (sometimes written as teraflops) is a measure of performance: number of operations per second. It is not a measure of time!

How do we account for "ναι" (nai), which is "yes" in Greek?

"No" in Greek is "όχι" (óchi).

I guess it's one of the few exceptions!

I find it interesting that the PIE word ne was basically preserved in (almost?) all Indo-European languages. On the other hand, its opposite wasn't as lucky. Examples: Germanic yes, ja, Romance si, sim, oui, Slavic da, tak, ano, ...