1. the quality of being focused and concentrated on something with great attention

Examples

• The student’s intentness during the lecture impressed the professor.
• She watched the chess match with such intentness that she forgot to eat.
• His intentness on solving the puzzle kept him awake all night.
• The artist’s intentness while painting was remarkable to observe.
• The detective’s intentness on finding clues led to a breakthrough in the case.
• Her intentness in studying for the exam paid off with excellent grades.