Capital assembled in very short order (5)
'capital' is the definition.
(capital of Bulgaria)
'assembled in very short order' is the wordplay.
'assembled in very' becomes 'so' (I can't explain this - if you can you should give a lot more credence to this answer).
'short' means to remove the last letter.
'order' becomes 'fiat' (synonyms).
'fiat' with its final letter taken away is 'fia'.
'so'+'fia'='SOFIA'
Can you help me to learn more?
(Other definitions for sofia that I've seen before include "Bulgarian city" , "Capital of Bulgaria" , "capital city" , "seat of government" , "Balkan capital" .)
'capital' is the definition.
(state capital of Delaware)
'assembled in very short order' is the wordplay.
'assembled in' indicates anagramming the letters.
'very' becomes 'v' (common abbreviation).
'short' means to remove the last letter.
'order' with its final letter taken away is 'orde'.
'v'+'orde'='vorde'
'vorde' with letters rearranged gives 'DOVER'.
(Other definitions for dover that I've seen before include "There'll be blue clouds over the white cliffs here" , "Kentish port" , "Cinque Port" , "fish" , "Channel port" .)