You have a KEEN insight
into the human heart,
The Big Bang Theory Season 5, Episode 13
...your mind has lost its KEEN edge.
The Big Bang Theory Season 4, Episode 22
As a man with a KEEN
sense of style,
The Big Bang Theory Season 5, Episode 2
You have a KEEN military mind, Pod.
Game of Thrones Season 6, Episode 8
- Keen observation, goodbye.
- You see where you went wrong, don't you?
The Big Bang Theory Season 1, Episode 12