tranquil

Meanings

1. 1
   adj

   Free from emotional or mental disturbance.

   Some time passed before I felt tranquil even here: I had a vague dread that wild cattle might be near, or that some sportsman or poacher might discover me.

2. 2
   adj

   Calm; without motion or sound.

   […]that the streams which did form were clear and tranquil because fed by perennial springs from the underground supply; and that in their tranquil waters extensive peat bogs formed.

3. 3
   adj

   (of a body of water) free from disturbance by heavy waves

4. 4
   adj

   not agitated

Etymology

Borrowed from Middle French tranquille, from Latin tranquillus, from trāns- + the root of quiēs (“rest, quiet, peace”), ultimately from *kʷyeh₁- (“to rest”).