Keen means strong or intense. It can also refer to something being sharp or acute, especially in the sense of being insightful or perceptive. A keen observer might notice details that others might miss.
"Keen" Examples
Keen
A keen sense of observation is necessary to detect subtle patterns in nature.
SYNONYMS
sharp acute perceptive
EXAMPLES
The keen eye of the hawk spotting prey from a great distance. With her keen sense of smell, Sarah can detect the faint aroma of freshly baked cookies from a block away. The team's keen analysis of the competition's strategy helped them come up with a winning strategy. The keen edge of the razor sliced through the fabric with ease. Her keen curiosity drove her to ask probing questions and get to the heart of the matter.