Milena Baroni, friends with Eliza for a year and a half, describes a "tranquil, calm" person.
But my fervent desire for a tranquil personal life won in the end.
The Bubali Bird Sanctuary is a tranquil oasis on the northwestern edge of the tiny Caribbean island of Aruba.
Observing the slow-moving procession was akin to watching a tranquil dream float by.
That is probably why I quite like writing in tranquil garden sheds.
Be tranquil, and let the spring-time come, that the buds of his hopes may put forth blossoms.
Here, at least, all was tranquil—possibly his fears had been too great.
If observed without moving the plant about, they appear to be tranquil and inactive.
They envied her because she alone was tranquil, wealthy, powerful, and free.
The Stentors are inhabitants of fresh, tranquil water, not subject to agitation, and covered with water plants.
1966. ALGOL-like language with sets and other extensions, for the Illiac IV. "TRANQUIL: A Language for an Array Processing Computer", N.E. Abel et al, Proc SJCC 34 (1969).