[raoulduke]

I can't think of any other concordances between Egyptian /j/ and /p/ in other languages. To be honest I've never seen the word jtj before today. There's a longstanding and known relation broadly with /p/ or /b/ and father and /m/ and mother. And as far as I'm aware there's no consensus on the meaning of that relation. But jtj isn't the root related to those; and Egyptian doesn't seem to have a strong example of /b/ (http://starling.rinet.ru/cgi-bin/response.cgi?single=1&basen... ).

[posterboy]

I was suggesting that pit was an extension of it.

I think the j in jt is a remnant of jw (true), jw-?t, (biological father), but only because jw is the only egyptian j- lexeme I know so far, because I like to connect it to IO and Jo- and the jedi knights. For p- I'm not so sure, but something like grand-father or god-father would fit the theme, or less familiar for us distant from the Neolithicum, the stone-father (grey/old, hard/strong, inanimate/false vs true, crafty/fundamental).