In music, tranquil: noting a passage to be so rendered.
The Century Dictionary (Public Domain)
Use "tranquillo" in a sentence
"The next two days were a carbon copy of the previous day with constant checks of temperature, blood pressure and pulse, electrocardiograms, adjustments of my dextrose solution, examinations of the incision where the pacemaker was inserted, changes of sheets and … oh, yes … instructions to remain "tranquillo"."
"I'm happy to say that, bit by bit, I'm getting used to my pacemaker, even though, at the time of writing, I'm doing things slowly and trying to remain tranquillo, as opposed to doing everything at my usual brisk pace."
"Anne-Sophie Mutter brought remarkable focus and fire to this "heart's jewel," daringly slowing the tempo significantly for the second subject of the first movement, which turned the "tranquillo" section into a searching, internal monologue."