Hesitate, as a doctor, to accept monetary union (5)
I believe the answer is:
demur
'hesitate' is the definition.
(I've seen this in another clue)
'a doctor to accept monetary union' is the wordplay.
'a doctor' becomes 'dr' (abbreviation).
'to accept' means one lot of letters goes inside another.
'monetary union' becomes 'emu' (I can't justify this - if you can you should give a lot more credence to this answer).
'dr' going around 'emu' is 'DEMUR'.
'as' is the link.
Can you help me to learn more?
(Other definitions for demur that I've seen before include "Cavil, dispute" , "Protest or disagree mildly" , "Hesitate from uncertainty or object" , "Take exception (to)" , "Object gently" .)