Pronouncing kubernetes was a problem for me as a greek (greek way would be kee-vaer-nee-tees and it means governor). Getting my mind to use the english word tripped me out, and using the greek pronunciation didn't make sense to anybody. Since trying to say "kubernetes" just trips my mind, I say kubernet (coobearnet). And use the same term "kubernet" for both "kubernetes" and the "k8s" shortcut.

Kubernet = "k for graph (eg k-anonymity, k-neighbor search), uber for awesome, net for network!" It's a very descriptive and easy to pronounce/memorize name that frees my mind from the greek pompousness.

PS. k0s, I would pronounce "Cause" or maybe... (to make a silly bloodborne reference) Kos, some say Kosm