In a moderately honest way? (6)
I believe the answer is:
fairly
'in a moderately' is the definition.
I can't judge whether this defines the answer.
'honest way?' is the wordplay.
'honest' becomes 'fair' (similar in meaning).
'way?' becomes 'ly' (I can't explain this - if you can you should believe this answer much more).
'fair'+'ly'='FAIRLY'
Can you help me to learn more?
(Other definitions for fairly that I've seen before include "Rather" , "Equitably; passably" , "To a moderate degree" , "pretty" , "Quite" .)