形容词

1. 未被动过的；未被移动的；未用过的
Something that remains undisturbed is not touched, moved, or used by anyone.

2. （地方）平静的，未受扰乱的
A place that is undisturbed is peaceful and has not been affected by changes that have happened in other places.

3. （人）未被打扰的，未受干扰的
If you are undisturbed in something that you are doing, you are able to continue doing it and are not affected by something that is happening.

4. 不烦恼的；不着急的；不担忧的
If someone is undisturbed by something, it does not affect, bother, or upset them.

1. untroubled by interference or disturbance

e.g. he could pursue his studies undisturbed