Eccentric poet lost nothing - I would be indifferent (5)
I believe the answer is:
tepid
'indifferent' is the definition.
(I've seen this in another clue)
'eccentric poet lost nothing i would' is the wordplay.
'eccentric' indicates anagramming the letters.
'lost' is a deletion indicator.
'nothing' becomes 'O' (looks like zero - 0).
'i would' becomes 'I'd'.
'poet' with 'o' taken out is 'pet'.
'pet' with letters rearranged gives 'tep'.
'tep'+'id'='TEPID'
'be' acts as a link.
(Other definitions for tepid that I've seen before include "Showing little interest or enthusiasm" , "Slightly warm" , "lacking enthusiasm" , "Not very warm (water)" , "without passion" .)