Be indebted (3)
I believe the answer is:
owe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be indebted</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 owe that I've seen before include "Ben in debt" , "Have to thank" , "Have a duty to pay" , "Have obligation to pay" , "Be indebted" .)