What is "Oki-doki" or "Oki-dokie" or "Okay-dokay"
Solution 1:
It's rhyming reduplication and the usual spelling is okey-dokey (see the accepted answer in that question). – Andrew Leach
Solution 2:
I think it's a moot question, really. The etymology of the term is disputed, however, current usage is invariably synonymous with the adjective 'alright'.
I recommend using 'alright', 'satisfactory' or another 'grown-up' equivalent in formal or academic settings, 'okay' in informal or dubious communicative spheres, and owt you fucking like in those circles where you can get away with it.
Okie-diddle-dokie?