Yale is broken with little effort (6)
I believe the answer is:
easily
'with little effort' is the definition.
(I've seen this before)
'yale is broken' is the wordplay.
'broken' indicates anagramming the letters.
'yale'+'is'='yaleis'
'yaleis' with letters rearranged gives 'EASILY'.
(Other definitions for easily that I've seen before include "without a hitch?" , "with little effort" , "With little difficulty" , "Simply" , "no problem!" .)