Possibly amend given title (5)
I believe the answer is:
named
'given title' is the definition.
'named' can be an answer for 'given' (naming is a kind of giving). I am not certain of the 'title' bit.
'possibly amend' is the wordplay.
'possibly' is an anagram indicator.
'amend' is an anagram of 'NAMED'.
Can you help me to learn more?
(Other definitions for named that I've seen before include "Christened" , "Handled" , "Titled" , "Called" , "Entitled" .)