stupidly

I once stupidly asked him why he smiled so often.

How can you teach a child who just grins stupidly at you all day?

He stupidly forgot his keys at home again.

She stupidly left her phone in the taxi.

They stupidly ignored the warning signs.

I stupidly spilled coffee on my laptop.

He stupidly tried to fix the broken TV himself.

She stupidly trusted a stranger with her personal information.

They stupidly underestimated the difficulty of the task.

He stupidly spent all his money on unnecessary things.

She stupidly believed everything she read online.

They stupidly went hiking without any supplies.