Copasetic

I first heard the word "Copasetic" used about 25 years ago. It was immediately clear from its context what the word meant: satisfactory. Linguists have puzzled for years, though, over where the word came from.

I would suggest that the word ultimately originated from the Greek phrase κομψός ἔχεις, which means 'getting along well'. There are several other Greek words with similar sounds and meaning, such as κοπάζω and especially its form κοπάσει.