...your mind has lost its KEEN edge.
The Big Bang Theory Season 4, Episode 22
You have a KEEN insight
into the human heart,
The Big Bang Theory Season 5, Episode 13
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
Our fathers are both
rather KEEN on the prospect.
Game of Thrones Season 4, Episode 2