improvidently

Improvidently the plates of the boat had been gummed together only, instead of being also sewed.

He found a hollow among the boulders, and improvidently ate half his store of sandwiches.

Don't overtire yourself—don't use improvidently the new strength.

I adhered to the promise I had improvidently given to Welbeck, but had excited displeasure, and perhaps suspicion, in the lady.

We had a gun, but improvidently had left our ammunition at another place of deposit, about a hundred rods distant.