I opined to keep Quinn and Martha out of the picture, at least at present.
When pressed, they opined only that Brandon Westlake acted more suicidal than threatening but they had been with him for several minutes where Lydia had just arrived.
Plato once opined that the object of justice was to see that each man got what he deserved.
As Smokey has also opined, that sentence you quoted has almost no identifiable meaning - even to native English speakers.
Poland, Panin opined, would be especially useful in case of Oriental combinations.