Impatiently, the Irish break deadlock deal easily, in the end (7)
I believe the answer is:
briskly
'impatiently' is the definition.
Both the answer and definition are adverbs. Perhaps they are linked in a way I don't understand?
'irish break deadlock deal easily in the end' is the wordplay.
'irish break deadlock' becomes 'brisk' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'in the end' indicates one should take the final letters.
The final letters of 'deal easily' are 'ly'.
'brisk'+'ly'='BRISKLY'
'the' is the link.
Can you help me to learn more?
(Other definitions for briskly that I've seen before include "With vigour" , "Rapidly" , "In a quick manner" , "Quickly" .)