Absolute, utter (3-3-3)
I believe the answer is:
out-and-out
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">absolute</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that absolute can be written as out-and-out)</span><br/ ><br/ >'<span class="explanation-format__original">utter</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for out-and-out that I've seen before include "Thorough and complete - emphatically not indoors" , "Utter, absolute" , "Utter and thorough - never in" , "Thorough, surpassing" , "Definitely" .)