I'm pretty certain I understand your point.
How about swimming in a backyard pool with a privacy fence?
If you're in your backyard with a high privacy fence and you're no more likely to be seen than if you were in the house -- is that nudity or not?
The standard I tend to use (but I'm not entirely consistent about it) is whether or not a textile would likely engage in that behavior. As far as I know, very few textiles would consider swimming nude in their own backyard pool. And if they did do it, they'd be certain no one ever knew about it. Very risque. [can't have the diacritical over the 'e' because TN deletes the entire character]
Consider that probably every president who was in the Whitehouse while there was a Whitehouse pool swam nude in that pool, but it's borderline obscene to even suggest it. People do things behind closed doors that shouldn't be discussed.
So, yes, I considered swimming nude in a backyard pool with high privacy fence to be nudity.
The standard I tend to use (but I'm not entirely consistent about it) is whether or not a textile would likely engage in that behavior.
I like that definition, although I may count extended time at home alone rather than exclude it. I certainly consider it counts for myself! True, it is more limited than being outdoors or in some sort of shared space, but one is experiencing it beyond the normal activities of showering or getting changed. Even if only for a few minutes while one's disapproving family is out! For me, that may be as short as preparing my morning coffee as I did recently, but that is beyond the realm of getting changed and feels so.
What a joy to rekindle an old habit. This morning was a warm 68 degrees and threatening to rain at any moment. Should I ? Should I? My normal daily routine starts with my coffee in hand and a short brisk walk for a half mile or so down the neighboring street, naked of course. For some reason this morning was different. I decided to go the other way which included a second residential area with a mile long dead end street. To get here I must cross on of the busiest streets in the area. At this time , 5:00 AM the traffic is generally sporadic, usually a car passing by every 5-6 minutes. Today just felt like the time to take a long walk. With coffee in hand I traversed the busy road and set off. Not a soul in sight down the residential street. My naked walk was rekindling my love of early morning neighborhood walks from an earlier time in my life. As I started down the street I heard 3 or 4 cars zipping by behind me but no horns or other distractions audible, maybe they did not see the naked man walking down the cross street. It suddenly came to me I was almost at jogging speed with my heart advancing. I stopped, took in a long breath and realized I should enjoy this more so I changed my gate to a very slow meandering walk taking in the surrounding scenery, front doors, lots of them just twenty feet away! As I reached the end turnaround and headed back the smile on my face said it all. The walk back was just as pleasant, watching at least 10 vehicles zoom by on the busy cross street, not a soul paying attention to an early morning walker strolling up the street naked. This feeling of pure enjoyment took over my brain trying to convince me to make a second tour of this quiet street. Was I going to do this again? Did I have time? There is a time in ones life where they just give in and don't care. This was one of those for me so off I went again. I walked to the far turnaround again, stopped and enjoyed 4-5 minutes of pure not supposed to be naked here moments! Standing here I noticed the vehicle count at the far end on the busy cross street had grown to one every minute or two which was going to present a challenge crossing it. At that very moment it started to rain. I had forgot how good it feels to be outside in the rain naked even more so I discovered how good it felt to be walking down a residential street in the rain naked! The most enjoyable part came at the end walking in the rain, ending up at the busy intersection standing in the rain waiting to cross while 5-6 vehicles zoomed by with the rain water from their tires splashing me as they zoomed by. I can't wait for the next walk!
I use to like rollerblading pre-dawn in the park. starting falling too much & had to quit. Anyway, I always loved being nude in the park. Zipping along the bike paths with the breeze blowing all around me. I didn't like having to stop to remove my shorts, so I cut the crotch out of them enabling me to remove them over my head. Usually I would just carry them in one hand and skate away. Occasionally, I would deposit them somewhere and take a risk . Had to duck into the bushes a few times when encountering other legally dressed morning people. I even crashed & burned once when I quickly came upon a couple walking their dog. Was very "Happily Surprised" when the dog didn't hear me.
For me, I can recall several things I have done which were really bold.
Probably the boldest was when I was on a nudist beach and walked over a hill to an adjacent textile beach to buy some baguettes and drinks for lunch. There was a bit of a queue and well over 100 swimwear clad people nearby. I waited briefly at a quiet end of the servery but was waved over to the busier end.
The fellow who eventually served me had a :O face but a fellow server took over, completely unfazed and I ordered my food and drink, paid for it (had a bumbag with cash) and returned to the nudist beach.
Nobody (apart from the first server) seemed to notice or bother which was a great feeling.