Definitions

1. noun

a quality of being slightly eccentric or whimsical, especially in a charming way; a state of being slightly confused or forgetful, often in a humorous or endearing manner

“Her dottiness was endearing, and her friends loved her for it.”

2. noun

a state of being slightly scattered or disorganized, often in a way that is endearing or amusing

“His dottiness made it hard for him to keep track of his schedule, but he always managed to arrive on time.”