Relatively unimportant half? (5,4)
I believe the answer is:
small beer
This clue might be a double definition.
'relatively unimportant' is the first definition.
'small beer' can be an answer for 'unimportant' (I've seen this before). I'm not sure about the 'relatively' bit.
'half?' is the second definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
Can you help me to learn more?
(Other definitions for small beer that I've seen before include "trivial stuff" , "Insignificant thing" , "what one may get in the pub" , "Half, say" , "(Drink) of no importance" .)