Impulsively

He told his wife to stop impulsively shopping.

Women are impulsively attracted to men who appear to be masculine.

I impulsively bought some croquettes because they were on sale.

I should be careful not to buy anything impulsively today.

You tend to act impulsively.

You often act impulsively or hesitantly.

"Of course, this wasn't part of some master plan. I impulsively used my vast power to do something nice without thinking it through. And then something I didn't expect happened. Even though I should have expected it."