Possibly first results of disaffection (5)
I believe the answer is:
rifts
'results of disaffection' is the definition.
Although both the answer and definition are plural nouns, I can't see how one could define the other.
'possibly first' is the wordplay.
'possibly' is an anagram indicator.
'first' with letters rearranged gives 'RIFTS'.
Can you help me to learn more?
(Other definitions for rifts that I've seen before include "Breaks, severances" , "Clefts or fissures." , "Clefts in earth, or disagreements" , "Splits" , "Deep divides" .)