1. the quality of being intelligent or clever
2. the quality of being neat, stylish, or well-dressed in appearance
3. the quality of being quick or brisk in movement or action

Examples

• Her smartness in mathematics impressed all her teachers.
• The smartness of his business decisions led to great success.
• She was known for her smartness and always looked impeccable.
• The smartness of his uniform made him stand out at the ceremony.
• The soldiers marched with remarkable smartness and precision.
• His smartness in responding to questions showed his quick thinking.
• The smartness of her outfit was perfect for the job interview.