Clumsy or amateur (8)
I believe the answer is:
inexpert
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">clumsy</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">amateur</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for inexpert that I've seen before include "Amateur" , "Bumbling" , "with little skill" , "not good enough" , "Inept rex may be lacking in skill" .)