Checked, examined (6)
I believe the answer is:
tested
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">checked</span>' is the first definition.<br/ ><span class="explanation-format__explanation">('test' can be a synonym of 'check')</span><br/ ><br/ >'<span class="explanation-format__original">examined</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(testing is a kind of examining)</span><br/ ><br/ ></span>
(Other definitions for tested that I've seen before include "Proven" , "In repose" , "Subjected to examination, put through paces" , "Examined for quality or reliability" , "critically examined" .)