But then it gets less and less delightful, and more and more tantalizing...

And that's precisely what I seek here. The word? "кайф"! According to my beloved Kovalev, it's a slang term for "pleasure" or "whim", and having recently come across Hebrew "כיף" (another slangy word meaning "fun" or "pleasure" and pronounced "kef") which is definitely of Arabic origin, I can't shake off the feeling this one may just have the same roots.
Could anyone be kind enough to either confirm or refute this?
Cheers
