The point at which the thought of another relationship, or another hobby, leaves one feeling more exhausted than excited.
I have a job, two boyfriends, and a photography hobby, and the idea of one more thing to do makes me tired just thinking about it! I'm polysaturated!
When a polyamorous person has as many significant and insignificant others as they think they can handle at a given time.
"After acquiring a boyfriend and a girlfriend in the space of two months and barely hanging on to her husband, Julia was feeling pretty polysaturated."