To a high degree (2,6)
I believe the answer is:
in spades
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">to a high degree</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for in spades that I've seen before include "to a high degree" , "Without restraint" , "Extremely" , "by the yard" , "to a large degree" .)