Put off by fuss about Japan's capital vessel (7)
I believe the answer is:
adjourn
'put off' is the definition.
(thesaurus)
'fuss about japan's capital vessel' is the wordplay.
'fuss' becomes 'ado' ('ado' can be a synonym of 'fuss').
'about' indicates putting letters inside.
'japan' becomes 'j'.
'capital vessel' becomes 'urn' (urn is a kind of vessel. I am not sure about the 'capital' bit.**).
'ado' going around 'j' is 'adjo'.
'adjo'+'urn'='ADJOURN'
'by' acts as a link.
Can you help me to learn more?
(Other definitions for adjourn that I've seen before include "Close at the end of a session" , "Put off to later date, say meeting" , "Put off to another time" , "Delay" , "Postpone until another time" .)