dispositive:
Information or evidence that unqualifiedly brings a conclusion to a legal controversy. [The Free Dictionary – Legal Dictionary]
Found in “Chief Justice – gasp! — may be savior for class-action opt-outs,” Alison Frankel, Reuters:
At oral arguments Monday afternoon at the U.S. Supreme Court in California Public Employees’ Retirement System v. ANZ Securities, the justices seemed to fall into predictable camps – with one crucial – and potentially dispositive – exception.
