Sonder is also a made-up word that means "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy. I felt deep sonder thinking about the all the people who looked up this word along with me." [1] And in German Sonder means special and in Dutch Zonder (with a Z) means without.

[1] https://www.urbandictionary.com/define.php?term=sonder