Untroubled (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">untroubled</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for peaceful that I've seen before include "Not disturbed by strife or war" , "Amicable" , "Not violent" , "Placid, not belligerent" , "Serene" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">untroubled</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for carefree that I've seen before include "Happy and blithe - no worries" , "Free of trouble and worry" , "Endures" , "Happy-go-lucky, no worries" , "Without anxiety or responsibilities" .)