The phrase "a disquiet" is correct and usable in written English.
It can be used to refer to a feeling of unease or anxiety about a situation.
Example: "There was a disquiet among the team as they awaited the results of the project."
Alternatives: "a concern" or "an unease".
"We won't let outsiders pretend that there's a disquiet [in the club].
After the memorial jury narrowed the competition to a few finalists, a disquiet came upon him.
Whatever answer is given, underneath the national embarrassment churns a disquiet turned to dread and now anger.
"I have yet to talk to anyone who says they aren't reflecting a disquiet that they themselves feel," Mr. Martin said.
I think that in this ultra-consumerist society we live in, we are experiencing a disquiet particular to the way we are living".
When Edward Said's ground-breaking Orientalism appeared in 1978, it articulated and theorised a disquiet that already existed - albeit in fragmented and anecdotal forms - in Arabic critical discourse.
He… Stephen Sondheim and James Lapine's "Into the Woods" (at the Delacorte, in a Public Theatre production) is a disquieting show about disquiet.
Stephen Sondheim and James Lapine's "Into the Woods" (at the Delacorte, in a Public Theatre production) is a disquieting show about disquiet.
To feel a deep disquiet at our headlong passage into what is a new phase of our existence is neither superstitious nor backward.
Though I dare say they'd be more disturbed by a giant squid, the sight of Olga has caused a certain disquiet among some visiting fans.
In Hamlet, disquisitions on man, belief, a "rotten" state, and times "out of joint"—clearly reflect a growing disquiet and skepticism.
