Rely (6)
I believe the answer is:
depend
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rely</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to depend on someone is to rely on them)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for depend that I've seen before include "Trust confidently, rely on" , "Bank" , "Rely or hang on" , "Put trust (in)" , "Hang down or be connected to something" .)