inexhaustibly

Inexhaustibly kind to undeserved misfortune, a little impatient of mere incompetence, implacable to continuous idiocy.

He was poor of purse, but inexhaustibly rich in the happier gifts of fortune.

The soil only needs water to become inexhaustibly productive.

But he is an inexhaustibly interesting figure to me, & will remain so in the long run to the world, I am persuaded.

Thus side by side flowed on the continuous streams of that wit and pathos which he poured forth inexhaustibly to the very end.