Of legendary king of Thebes (7)
I believe the answer is:
oedipal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">of legendary king of thebes</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 oedipal that I've seen before include "Like a boy desiring his mother" , "Type of complex" , "Relating to a son/mother complex" , "Like a complex" , "type of conflict arising in Greece" .)