Well-known
I believe the answer is:
famous
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">well-known</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that well-known can be written as famous)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for famous that I've seen before include "Well-known" , "Known to very many people" , "Known-of widely" , "Known and esteemed" , "Widely-known" .)