'remained collected' is a grammatically correct and usable phrase in written English.
The phrase means to stay composed and calm, even in difficult or stressful situations. For example: Even with all of the chaos and confusion, Tom remained collected and kept his composure.
In the face of such challenges O'Sullevan remained collected.
Instead of growing unnerved tonight, she remained collected as Brazil declined brutishly to give her any space.
Sister Bernadetta, who remained collected throughout, accompanied the bodies to the morgue, and then returned to the convent.
But Pat Bonds, the former wife of the late Giants star Bobby Bonds, remained collected.
The bus driver remained collected and composed, and continued to drive, unfazed by the incident.
From now on, Griffith-Jones wrote, for the abuse to remain legal, Mau Mau suspects must be beaten mainly on their upper body, "vulnerable parts of the body should not be struck, particularly the spleen, liver or kidneys", and it was important that "those who administer violence … should remain collected, balanced and dispassionate".
After an initial manual review of the remaining collected posts, we quickly discovered that a large proportion of the tweets not unexpectedly belong to the category other.
During the study, investigators encountered community concern about dengue and were asked by health authorities to use the remaining collected serum for a dengue seroprevalence study.
Your horse should always be moving forward, but remain collected in your hands.
Keep in mind that your body language can also be a distraction to others so remain collected and still during the hearing.
Mr. Parker remained relatively collected throughout, although eventually he gave in and showed a polished video in lieu of a live demonstration.
