Honestly? Otherwise (2,3,3)
I believe the answer is:
on the sly
'honestly? otherwise' is the definition.
I can't judge whether this defines the answer.
'honestly? otherwise' is the wordplay.
'otherwise' indicates anagramming the letters.
'honestly' with letters rearranged gives 'ON THE SLY'.
Can you help me to learn more?
(Other definitions for on the sly that I've seen before include "Behind someone's back" , "in private" , "Honestly (anag) - dishonestly" , "Secretly or furtively" , "Done in an unpleasant and secret way" .)