adjective
tranquil
TRANG-kwil/ˈtræŋkwɪl/
Calm, peaceful, and undisturbed.
The person sits in a tranquil pose beside the still lake.

Etymology
Latin tranquillus supplies the idea of being quiet and undisturbed. Early English use especially described facial features, applying that calmness to a person's outward expression.
In context
It's very peaceful and calm. A tranquil little place, yeah.
More examples
- She feels tranquil after a long walk.
- We enjoy a tranquil afternoon beside the lake.
- The neighborhood becomes more tranquil after rush hour.
Forms
tranquil · more tranquil · most tranquil
tranquility noun — A state of calm and peace.
tranquilly adverb — In a calm, peaceful manner.