ĉiukaze

The doublet the other page already warned you about.Ĉiuokaze at rank 1735 is built on okazo, an occurrence, and ĉiukaze is built the same way on kazo, a case. Both mean in any case, at any rate, anyway. Both are correct, both are understood everywhere, and ĉiuokaze is the commoner in print, which is why it arrives 760 ranks earlier in this course. Nothing distinguishes them in meaning, and there is no register difference worth the ink either.

Decode it and it teaches you two pieces of grammar for free. Ĉiu is the correlative for every, kaz- is the root, and the -e is the adverb ending that turns the whole compound into something you can drop anywhere in a sentence. The pattern is regular and productive: ĉiutage daily, ĉiufoje every time, ĉiuokaze and ĉiukaze in any case. Learn one and you can build the rest.

Where it sits among the connectors. Ĉiukaze dismisses a doubt and moves on: whatever the truth of what came before, this still holds. That is a different job from tamen, which contradicts, and from aliflanke, which balances one side against another. As an adverb it never agrees with anything and never takes -n, and it is happy at the head of a sentence with a comma after it, exactly like English "anyway". The whole family is laid out in Esperanto connectors.