Every economics discussion I've ever had counts people who took major step downs, like from a $100K professional to working in a restaurant counts that as "underemployed." I'm not debating you if you're going to debate basic definitions. I don't give a shit about the semantics, the point is that's clearly underemployed. If you want to play with yourself, go do it by yourself
What you are saying is stupid and not because it ignores official definitions of words. It is stupid because it non-workable one-sided bullshit one arrives at out of desperate straw grasping to maintain the un-maintainable.
Lets take your definition of "underemployed" as including those that got a demotion, but by this reasoning can you explain what the OPPOSITE would be? Am I OVERemployed since I got a couple of raises? Or if you want to mix in underpaid full timers with part-times, by what reasoning can you protest mixing in part timers who got a raise with full timers?
If you are going to measure demotions you have to somehow account for promotions as well to get numbers that actually tell you something real that reflects the balance between demotion and promotions in the economy.
But AGAIN getting real, honest measurement IS NOT YOUR CONCERN. Your concern is to upkeep conclusions you made for stupid reasons well before you started getting schooled on economics here.
Sorry, can't hear ya, man, what did you say?