untroubled

Adjective (3)

1. not beset by troubles or disturbance or distress“seemed untroubled by doubts of any kind”“untroubled sleep”“a kind untroubled face”
2. free from fear or doubt; easy in mind“he was secure that nothing will be held against him”Synonyms: secureunafraid
3. free from turmoil or worries“untroubled times”