A bloody year, with no small ill-feeling (8)
I believe the answer is:
acrimony
'ill-feeling' is the definition.
(I've seen this before)
'a bloody year with no small' is the wordplay.
I cannot quite see how this works, but
'a' is within the answer.
'year' could be 'y' and 'y' is located in the answer.
'no' could be 'o' (resembles 0 - 'no' can mean 'zero') and 'o' is found within the answer.
This explanation may well be incorrect...
(Other definitions for acrimony that I've seen before include "Bitterness of temper" , "Angry and unpleasant feelings or words" , "Bitter feeling" , "poison" , "'Bitterness, sharpness (8)'" .)