frivolously

One British general frivolously put it, “I am afraid that the dear old Church has missed the bus this trip.”

Certainly he did not spend his money frivolously, and he never had done so.

How could he himself pay court to her when she frivolously, if only for the moment, preferred this commoner's company?

Surely his life up to this time had not been so frivolously classical as to cause him any deserved regrets.

The hesitancy is because the word and its relationship are spoken of lightly, frivolously, so much, even in good circles.