untroubled (
http://definr.com/untroubled)
adj 1: not beset by troubles or disturbance or distress; "seemed
untroubled by doubts of any kind"; "untroubled sleep";
"a kind untroubled face" [ant:
troubled]
2: free from fear or doubt; easy in mind; "secure himself, he
went out of his way to help others" [syn:
secure,
unafraid]
[ant:
insecure]
3: free from turmoil or worries; "untroubled times"