[Hayarotle]

I find it interesting to speculate why those words are not in widespread use. Many of them seem to either have more commonly used near-synonyms (acedia - apathy, indifference or ennui), or be somewhat unwieldy to use (absquatulate would be an useful word, but is way too long and sounds way too pompous).

Some of them, however, combine being rare, accessible and not easily replaced by other words. For example, calumny, copious and crux. I wish to see those words having wider use, as they would be handy to express concepts that generally require longer sentences to get across.