dingbat

don't be such a dingbat; think before you act.

he called me a dingbat for forgetting his birthday.

sometimes i feel like a dingbat when i can't remember simple things.

she made a dingbat decision that cost her the game.

my brother is a total dingbat when it comes to directions.

don't be a dingbat; just follow the instructions carefully.

she laughed at her own dingbat moments during the presentation.

he always acts like a dingbat when he's nervous.

calling someone a dingbat can be playful or insulting.

she realized she was being a dingbat for not checking her email.