1. most eager, enthusiastic, or interested
Usage: superlative form of keen
2. sharpest or most acute in perception or understanding
Usage: superlative form of keen
3. most intense or strongest in degree
Usage: superlative form of keen

Examples

• She was the keenest student in the class, always asking thoughtful questions.
• The detective had the keenest eye for detail among all the investigators.
• His keenest interest was in ancient history and archaeology.
• The keenest competition came from the neighboring school’s debate team.
• Even her keenest supporters began to doubt her strategy.
• The keenest pain came not from the injury but from the disappointment.
• He showed his keenest intelligence when solving complex mathematical problems.