lackadaisical

But everything had not gone well, and he found it very difficult to carry himself otherwise than lackadaisically.

He sighed often, and sometimes mightily; and ogled unhappily, and smiled lackadaisically.

He pursed his mouth and looked up lackadaisically at his glowering client, saying only "Ha!"

And I—I answered lackadaisically with just a casual glance at him, 'I don't know the figures,' and absorbed myself in my viands.