Hamper, impede (8)
I believe the answer is:
encumber
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">hamper</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">impede</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for encumber that I've seen before include "Be a burden to, hamper" , "Be a burden to, place load on" , "Restrict or impede" , "Saddle" , "Impede, burden" .)