A dingbat is someone who acts like a silly empty-headed person.
big headed person. big headed person.
Synonyms would be idiot, stupid, or empty-headed.
foolish, silly, brainless, empty-headed, giddy
The homophone for "person" and "empty space" is "aisle."
Having or showing a lack of thought or intelligence; mindless
It is the same thing: You are in irons when you are making no headway.
Childish, empty-headed, barmy, giddy, unprofound, whimsical, volatile, aimless
In typesetting, a dingbat is a decorative character or spacer, typically about the same size as a letter or digit.
A level-headed person is someone who remains calm is stressful situations, who doesn't panic but can think under pressure.
Extremely foolhardy, crazy, empty- headed. Maniacally inclined without thinking.
a spotty fat headed person