Have to have (4)
I believe the answer is:
need
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">have to have</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for need that I've seen before include "state of distress" , "destitute state" , "Call" , "A condition" , "''A friend in .... is a friend indeed''" .)