[ixtli]

If anything there should be a more broad term, something that includes people who are housing-unstable. I don't really consider the problem solved if a person worries every day that they might be homeless at the end of the next month!

[sjg007]

The term you are looking for is "housing insecurity".

[mrec]

"Roofless" is also a useful term to distinguish people actually sleeping rough from people crashing on friends' couches or in sketchy hostels or maybe squats. It's commonly used in the UK, dunno about elsewhere.

[ixtli]

ah yes. i had kinda a 'brain fart' when i wrote this comment. i knew this phrase existed but couldn't remember!