They might easily be one's trial (9)
I believe the answer is:
relations
'they' is the definition.
Both the answer and definition are plural nouns.
Perhaps there's an association between them I don't understand?
'easily be one's trial' is the wordplay.
'one's trial' anagrams to 'RELATIONS'.
However, I'm not clear how this is indicated.
'might' acts as a link.
Can you help me to learn more?
(Other definitions for relations that I've seen before include "People connected by blood or marriage" , "Kinsfolk's" , "granny and grandad, perhaps?" , "They're connected by blood or marriage" , "accounts" .)