> Americans could care less

So they do care?

Only the ones that care about English, generally.

Hehe.. I set my wordpress site to Australian English, but one look at my new edit page with its permanent "G'day" made me change it immediately back to GB-English.

I always think that the way that is written, is irrelevant to the way that it is spoken. I don't want to read it like it is spoken (Irvine Welsh I dislike your books though have no problem with the films), I want to read the words that communicate the concept.

supposedly ;) Sorry... being slightly facetious :)

I think supposably is a valid word and makes sense in this context.

The meaning overlaps a lot with supposedly, which is much more-commonly used, so it sounds a bit odd.

I hope that you, too are being sarcastic. The meaning doesn't overlap, it's the same word, mispronounced.

No.

https://en.oxforddictionaries.com/definition/supposably

Supposably is a real word, but the meaning is different.

It is a synonym for "conceivable", whereas supposedly means: "according to what is accepted or believed to be true"

see: http://www.dictionary.com/e/supposedly-vs-supposably/