无忧

• without cause for grief

例句

1. 他无忧无虑，只需要养活自己。
   He has no worries, only himself to provide for.
2. 他对他所造成的麻烦毫无所知，无忧无虑。
   He was blithely unaware of the trouble he had caused.
3. [谚]问心无愧，高枕无忧。
   A good conscience is a soft pillow.