capriciously

"The SEC acted arbitrarily and capriciously when... when it failed to respond to petitioners' comments and failed to conduct a proper cost-benefit analysis," according to the opinion from a three-judge panel.

“These activists are heroes, and the Department of Justice has acted capriciously and illegitimately.”

But they don’t change capriciously, or on their own.

And then, just as capriciously as it had burst forth, the drama subsided.

If he didn’t, then he’d be doing this capriciously to inflict pain on his father — which would be indefensible, wouldn’t it?