more valid

accurate authentic binding compelling conclusive credible good lawful legal legitimate logical original persuasive solid true well-founded

attested authoritative bona fide cogent confirmed convincing determinative efficacious efficient in force irrefutable just kosher legit official potent powerful proven pure sound stringent strong substantial telling tested trustworthy ultimate unadulterated unanswerable uncorrupted weighty well-grounded

counterfeit evil fake false illegal illegitimate illicit improbable invalid unlawful unlikely unreal unreliable untrustworthy wrong

unacceptable unsound