Credulous, naive (4-4)
I believe the answer is:
wide-eyed
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">credulous</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">naive</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for wide-eyed that I've seen before include "Showing great surprise" , "Innocent - believing" , "Inexperienced; showing amazement" .)