Mention freer amendment (5)
I believe the answer is:
refer
'mention' is the definition.
(I know that mention can be written as refer)
'freer amendment' is the wordplay.
'amendment' is an anagram indicator.
'freer' is an anagram of 'REFER'.
(Other definitions for refer that I've seen before include "Make allusion, or turn to for information" , "Make allusion, direct attention with words" , "Freer to make an allusion" , "Mention, cite" , "Allude, assign" .)