The phrase "a decisive manner" is correct and usable in written English.
It can be used to describe the way in which someone acts or makes decisions with confidence and clarity.
Example: "She approached the negotiation in a decisive manner, ensuring that her points were clearly communicated."
Alternatives: "a firm approach" or "a resolute way".
"As Mr. Putin in a decisive manner influences the decision of this court, it would be proper from the legal standpoint to interrogate him," said Mark Feigin, one of the lawyers.
But E.U. officials wanted to demonstrate that they are capable of behaving in a decisive manner.
HAWKS 105, BULLS 84 Joe Johnson and Atlanta ended nearly four years of losing to Chicago in a decisive manner.
"The European Union must act in a decisive manner that conforms to its values", the Elysée statement read.
He added, "Failure on the part of the Palestinian Authority to confront terror in a decisive manner is absolutely unacceptable".
"I am gratified that shareholders have endorsed our offer in such a decisive manner," Mr. Icahn said in the statement.
In a memorandum to Secret Service employees, the director, Mark J. Sullivan, said the agency had "moved in a swift, decisive manner immediately after this incident was brought to our attention," according to a copy of the memo obtained by The New York Times on Monday.
So while NBC may have been wiser to act in a bold, decisive manner and tell Leno that his time had passed, it is not that hard to appreciate their hesitation to do so.
A properly structured wine advances through your sensory apparatus in an assertive, decisive manner.
"She's out in the field, buying, and I'm here," said Patricia Black, Albright's creative director, a tall woman with a wry and decisive manner, who looked chic in jeans, a white T-shirt, and heels.
"It is a matter of the utmost urgency that the group lifts the very real threat from its creditors by paying down its debt, and provides the reassurance that its bankers demand, that in the nearest future it will be run by a board which is competent, cohesive and capable of taking business decisions in an informed and decisive manner".
