Capable of error (8)
I believe the answer is:
fallible
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">capable of error</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fallible that I've seen before include "Capable of being wrong" , "Capable of erring" , "Northern Scandinavian" , "apt to err" , "Prone to error" .)