This is the follow up question of When to use “nugatory”?When to use “nugatory”?
So if we look at the Ngram of the word nugatory, it is noticeable that the word has been nugatory throughout the time. The trend starts from 1840, and has never gone up. It is slowing down, but still, there is no sign of coming back. Maybe someday it will become obsolete, like quizzaciously.
I really have no idea to explain it. Any idea?