The phrase "authoritative group" is correct and usable in written English.
It can be used to refer to a group that has the power or right to give orders, make decisions, and enforce obedience.
Example: "The committee acted as an authoritative group, making final decisions on the policy changes."
Alternatives: "official body" or "governing body".
They could be the one authoritative group that could argue the climate change case – and all from a position of scepticism.
One authoritative group, using worst-case assumptions, estimated that a plane spreading anthrax over a big city might kill 100,000 people.
There is an unusually charismatic and authoritative group of talking heads, including former star players like Michael Holding, Gordon Greenidge and Vivian Richards.
"But they changed the notion that people could blindly trust one authoritative group, when it turns out they're just like everybody else".
The union, a 53-nation body that is Africa's most authoritative group, made the call after a two-day gathering of African leaders marked by divisions over the handling of the crisis in Zimbabwe.
Work by the most authoritative group of scientists, the UN's Intergovernmental Panel on Climate Change, found that it is 90% certain that heatwaves will increase further in length and severity, as will extreme high tides.
Among the possible kinds of physical activities, various authoritative groups and researchers often recommend swimming as a means of increasing physical activity and gaining health benefits.
Smoking has not yet been designated as a cause of diabetes in reports of the U.S. Surgeon General or other authoritative groups.
Several authoritative groups have published consensus guidelines for the care of patients with Alzheimer's disease and suggested regular follow-up, with evaluation and management of behavioural disturbances, psychoses, and depression; active monitoring and support of the caregiver's emotional and physical health; and consideration of treatment with specific drugs.
Many prestigious and authoritative groups and individuals with no ideologic agenda have evaluated potential DDT harms over the last 70 years, and have consistently found no evidence of DDT harm that would cancel out the enormous health benefits of its use in malaria-endemic countries.
By now, it has established itself as the most authoritative academic group in the field.
