Dangerous, unsafe (5)
I believe the answer is:
risky
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">dangerous</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">unsafe</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for risky that I've seen before include "Involving a chance of danger" , "Having possibility of danger or loss" , "Potentially dangerous" , "too adventurous" , "taking a chance" .)