Prepared to accept the Italian without delay (7)
I believe the answer is:
readily
'without delay' is the definition.
(thesaurus)
'prepared to accept the italian' is the wordplay.
'prepared' becomes 'ready' ('ready' can be similar in meaning to 'prepared'**).
'to accept' means one lot of letters goes inside another.
'the italian' becomes 'il' (the in Italian).
'ready' placed around 'il' is 'READILY'.
(Other definitions for readily that I've seen before include "Willingly, without reluctance" , "Without much difficulty" , "Willingly, quickly" , "Without hesitation" , "Without difficulty or delay" .)