In My Opinion...

To me an opinion is any idea that is asserted without the support of direct and conclusive experience. This lack of supporting experience does not necessarily mean the opinion is false or entirely unsupported. It only means that it could be false, or otherwise misconstrued. It could also be true.

An idea, asserted or not, that has direct and conclusive experiencial (i.e. empirical) support is something I like to call simply, experience; or, to be more specific, direct experience. Even said "experience" is subject to being proven false, usually by more experience (but, occasionally by careful reasoning).

If an opinion is maintained in disregard of conflicting experience (or reasoning) then that would be what I like to call, "ignorence" (sic), which is a euphemism for ignorance. In my general experience, Christians like to call this, "blind faith". And, in my opinion, it goes against everything Christ tried to teach. But then, this could just be my own ignorence showing; only more experience will tell.