Fare-thee-well is defined as something done perfectly or to an extreme.
(noun)An example of fare-thee-well is when a performer acts so well that it could not have been better, “to a fare-thee-well.”
See fare-thee-well in Webster's New World College Dictionary
noun
See fare-thee-well in American Heritage Dictionary 4
noun
Origin:
Origin: From fare thee well, may it go well with you, good-bye
.