Excessively enthusiastic (4,2)

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4,2

gung ho

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

This is the entire clue.

(Other definitions for gung ho that I've seen before include "Overly enthusiastic (about war?)" , "Very (sometimes over-)enthusiastic and dedicated" , "Enthusiatic about war" , "Over-zealous to gun hog down" , "Unthinkingly eager (to fight?)" .)

I've seen this clue in The Mirror and The Times.

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