Its exact etymological origins are unknown, but there are several candidates.
的确切词源是未知的,但有几可能性。
If feeling that " of obscure origin" is the best we can do for copacetic, take a look at the long etymological note at the entry for copacetic at mariam-webster.com for a discussion of the word's history.
如果觉得“起源不明” 是我们能为 copacet 做的最好的事情,请查看 mariam-webster.com 上的 copacet 条目中的长词源注释,以讨论该词的历史。
Its cause was not helped by examples such the " p" which was added to the start of ptarmigan with no etymological justification whatsoever other than the fact that the Greek word for feather, ptera, started with a " p" .
之类的例子的帮助, 被添加到 ptarmigan 的开头, 没有任何词源学理由, 除了希腊语中的羽毛一词 ptera 以“p” 开头。