Frank has the power - and acted on it (6)

I believe the answer is:
candid
'frank' is the definition.
(synonyms)
'the power and acted on it' is the wordplay.
'the power' becomes 'ca' (I can't explain this - if you can you should believe this answer much more).
'and' becomes 'n' (common abbreviation for 'and').
'acted' becomes 'did' (to do is to perform a particular action).
'on it' means one lot of letters go next to another.
'ca'+'n'+'did'='CANDID'
'has' is the link.
Can you help me to learn more?
(Other definitions for candid that I've seen before include "Plain" , "Frank, forthright" , "Frank - and CID (anag)" , "Truthful, frank" , "Forthrightly sincere" .)
