The phrase "air of ease" is correct and usable in written English.
It can be used to describe a relaxed or comfortable demeanor or atmosphere in a person or situation.
Example: "She walked into the room with an air of ease, making everyone feel instantly at home."
Alternatives: "sense of calm" or "feeling of comfort".
There is about Mr. Gosling an almost preternatural air of ease.
Coughlin, who never easily swallows a loss, had an air of ease about him.
The compensating grace is that in much nonfictional literature that repudiates or ignores structure the reader is often delighted with an air of ease and of nonchalance and with that rarest of all virtues in the art of writing: naturalness.
His comments and anecdotes, while sometimes rambling, created such an air of ease that people called out to him, eagerly asked questions at the end and followed the music with rapt attention, even sometimes omitting the chorus of coughing between movements.
"The was an air of ease about Natasha when I spoke to her at her home boxing club, the famous Rotunda ABC in Liverpool.
In contrast with his somewhat reedy performances on past records, here Marry's vocals take on an almost super-human air of ease, rough edges polished and proffered smoothly, soaked with meaning.
Always maintain an air of comfort and ease when talking to people, like so: You: *in a steady voice.* Oh... hey, Amanda!
He tottered off for more Diet Cokes (the self-service here is impeccable), and chef Mumrez Khan emerged in a fetching pink-and-white-striped apron to accept our lavish compliments with an air of practised ease.
Like that book, The Little Stranger operates in the queasy borderlands between the supernatural and the psychopathological, and it is territory in which Waters moves with an air of supreme ease.
But it's far more difficult to maintain Shakira's air of transparency, the ease with which she leaps from culture to culture, role to role and language to language, all with bubbly girlishness and, behind it, a perfectionist's attention to detail.
She announced her performance on Instagram: "V11, V12 and V14 in a DAY! HOLY CRAP!!!!!" On Thanksgiving, she posted a photo from Texas on Instagram: "I shocked myself by getting the first female ascent of the legendary razor blade climb, Terre de Sienne (V14)!" (Also Federer-like is her way of blending frank amazement at her own capabilities with an air of humility and ease).
