Add one's two cents (5)
I believe the answer is:
opine
'add one's two cents' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for opine that I've seen before include "Proffer a view" , "Express a point of view" , "Express one's opinion openly" , "Express one's view" , "Suppose" .)