untroubled

(a) not beset by troubles or disturbance or distress
- seemed untroubled by doubts of any kind
- untroubled sleep
- a kind untroubled face
(a) free from fear or doubt; easy in mind
- he was secure that nothing will be held against him
secure, unafraid,
(s) free from turmoil or worries
- untroubled times

secure unafraid

troubled insecure