Keen - Crossword Clue, Answer and Explanation

'keen' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for eager that I've seen before include "Alert and active type?" , "Enthusiastic, avid" , "Excited by desire" , "It's a bore" , "Earnest" .)

I've seen this clue in The Irish Independent, the Sydney Morning Herald, the Evening Standard, The New York Times, the USA Today, the Penny Press, the King Feature Syndicate, The Telegraph, The Independent, The Mirror and The Guardian.

'keen' is the definition.
(I know that keen can be written as acute)

This is all the clue.

(Other definitions for acute that I've seen before include "Shrewd; severe" , "Urgently pressing" , "Extremely sharp or intense" , "feature at the beginning and end of a French summer" , "Sharp as of mind - or pain" .)

I've seen this clue in The Irish Independent, the Sydney Morning Herald, the Evening Standard, The New York Times, the USA Today, the Penny Press, the King Feature Syndicate, The Telegraph, The Independent, The Mirror and The Guardian.

'keen' is the definition.
(both can mean enthusiastic)

This is all the clue.

(Other definitions for avid that I've seen before include "Keen and eager" , "'Eager, zealous (4)'" , "Greatly desirous" , "Showing active interest and enthusiasm" , "Keenly interested" .)

I've seen this clue in the Evening Standard, The New York Times, The Telegraph, the Penny Press, the King Feature Syndicate, The Independent, The Sun and The Guardian.

'keen' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for agog that I've seen before include "with eyes on stalks" , "Excitedly interested" , "Bug-eyed" , "Expecting" , "Eager and wide-eyed" .)

I've seen this clue in the Evening Standard, The New York Times, The Telegraph, the Penny Press, the King Feature Syndicate, The Independent, The Sun and The Guardian.

'keen' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for ardent that I've seen before include "Burning with emotion" , "Very keen" , "Enthusiastic, eager" , "passion" , "Intensely enthusiastic" .)

I've seen this clue in the Universal, the Sydney Morning Herald, the Evening Standard, The New York Times and the Penny Press.

'keen' is the definition.
(thesaurus)

This is the entire clue.

(Other definitions for red-hot that I've seen before include "The rod (anag.)" , "Glowing with a high temperature" , "(Of information) very recently received" , "Flower (just out of the fire?)" , "Glowing; passionate" .)

I've seen this clue in the Evening Standard.

Keen (5)