Word Study
copacetic
CIDE DICTIONARY
copacetic, adj.
completely satisfactory. [WordNet 1.5]
"You had to be a good judge of what a man was like, and the English was copacetic."
OXFORD DICTIONARY
copacetic, adj. US sl. excellent; in good order.
Etymology
20th c.: orig. unkn.
For further exploring for "copacetic" in Webster Dictionary Online