The word was sonder. ... Though most dictionaries ignore the word, from the Macquarie to the Shorter Oxford. That might change in time, but you'd hardly blame a timid browser for suspecting the term to be Estonian. Norwegian is a better punt, however, where sonder is a plumb line that sounds a fjord's depths.
What does the term Sonder mean?
sonder – n. the realization that each random passerby is living a life as vivid and complex as your own. Narrated, written, directed, edited and coined by John Koenig. THE DICTIONARY OF OBSCURE SORROWS.
Can Sonder be used as a verb?
Now, make sonder a verb. Give it different tenses: sondering. (It's technically not a dictionary word, so this is totally allowed). We're going to talk about the necessity — yes, necessity — of sondering every day.