The phrase "a material adverse impact" is correct and usable in written English.
It is typically used in legal, financial, or business contexts to describe a significant negative effect on a company or situation.
Example: "The recent changes in regulations could lead to a material adverse impact on our operations and profitability."
Alternatives: "a significant negative effect" or "a substantial detrimental impact."
In an interview, Mr. Butler said he did not think the latest concessions would have "a material adverse impact" on drug company earnings.
"An adverse outcome with respect to any of these matters would likely have a material adverse impact on Enron's ability to continue as a going concern".
But the proposed rules are exceptionally vague, defining such jobs as any that could have "a material adverse impact" on national security — including police, customs and immigration positions.
Fidelity National issued a statement saying it did not believe the problems with the foreclosure process would have "a material adverse impact".
In its offering documents, Visa notes that any change in the interchange fee could have a "material adverse impact on our revenues, operating results, prospects for future growth and overall business".
The IRS issued the firm with a "statutory notice of deficiency" on 27 July, the company said in its quarterly financial filing, noting that it could have a "material adverse impact" on its finances.
Rusal added that it had "engaged counsel to advise the company in the arbitration and will vigorously defend its position" while stressing that it "does not expect its involvement in the arbitration [to] have any material adverse impact on its operations".
The danger of more wide-ranging sanctions has already caused BP to issue a warning of "material adverse impact" to its business, and the prospect of sustained, worldwide litigation against Rosneft in the wake of the Hague ruling only adds further cause for uncertainty and concern.If anything, the ruling is an expensive lesson.
"The words, actions and views of Mr. Sterling had an immediate, devastating, and material adverse impact on the NBA and its member teams (including the Clippers)" the league charged, "and will continue to have a devastating and material adverse impact on the NBA and its member teams so long as any of the current owners retains any ownership interest in the team".
Under applicable legal standards, this impact would not constitute" a material adverse change.
