"straightworld", a bit of glossing

[Mark Kohut]

First, as I posted, the meaning at the time of IV is more than just those who smoke pot.....it was the word for the dominant culture, not the alternative, 'counter-culture".....suburbia, office jobs, etc. [see Google Book Search, if interested]

I will get to an OED in the fulness of time, if no one has access, for their usage detail.

As early as 1972, it seems to have started to have the meaning of 
'not gay/lesbian"---[Again see Google Book Search, if interested]

It seems there are more citations for England/London than the US, for whatever that means, but it may have been used more in LA than many places around the time of IV. [hard to know since the internets [joke] do not have most from then].

Stephen Fry, actor/writer of an age still used it in this countercultural sense in a recent blog posting...

But I am also going to add this from what I call Pynchon's poetic/notional associations, lifelong.   He often mocks straight lines (and grids and right angles) especially in Against the Day (and GR, I think: Tore? )as in the layout of Chicago streets, for example.  Linearity is usually NOT a positive in his work.....so this word straightworld resonates with his whole oeuvre, not surprisingly. ....

He likes natural curves, the rounded walls of old European cities in ATD,
of course, the bent and broken.