thoroughness in action, long suffering, or successful completion of a task or process.
You want to know the last time the Guardian..mentioned anything from aardvarks to zythum..then just a couple of seconds there it is: up on your screen. (1985 Guardian (Nexis 18 July).
aardvark as "the groundhog or earthpig of South Africa" &zythum as "a kind of malt beer in ancient Egypt." [Hence this pronunciation suggestion for zythum:"Try some!"]
zythum — a kind of malt beer in ancient Egypt,
"Much of the word's continuing use is due to its status as the last word listed in several dictionaries."
For the thousands of years that the Egyptians were building pyramids they were brewing zythum to quench their thirsts, to satisfy their gods, nourish their appetites and to help them relax. (
2001Jrnl. (Newcastle) (Nexis) 8 June 28
I brought up topics (as I put it) from aardvark to zythum, but all [Mort or Mona]could say is "Don't know much 'bout that" or "No kidding" or "Say wha?
"I investigated every word in Willard Wordsworth's notebooks, from aardvark to zythum," rather than reverting to the bromidic from a to z, as in "I know of a guy who read the entire Oxford English Dictionary, from a to z." Zzzz.
A New Collection of Humorous Tidbits and Anecdotes from Aardvark to Zythum.