Swear about getting new reply (6)
I believe the answer is:
answer
'reply' is the definition.
(synonyms)
'swear about getting new' is the wordplay.
'about' indicates anagramming the letters.
'getting' indicates putting letters inside.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'swear' with letters rearranged gives 'aswer'.
'aswer' placed around 'n' is 'ANSWER'.
(Other definitions for answer that I've seen before include "Respond" , "'Daisy, Daisy, give me your ...... do'" , "'A soft . . . . . . turneth away wrath'" , "Solution (to problem)" , "Be satisfactory" .)