Not initially pleasant to fight for refrigerator (6)
I believe the answer is:
icebox
'for refrigerator' is the definition.
(synonyms)
'not initially pleasant to fight' is the wordplay.
'not initially' means to remove the first letter.
'pleasant' becomes 'nice' (similar in meaning).
'to fight' becomes 'box' (boxing is a kind of fighting).
'nice' with its first letter taken off is 'ice'.
'ice'+'box'='ICEBOX'
(Other definitions for icebox that I've seen before include "Chilled container" , "Insulated cabinet for storing food" , "cooler" , "useful in kitchen" , "US cold cabinet" .)