Adjective right, genuine
Synonyms: accurate, attested, authentic, authoritative, binding, bona fide, cogent, compelling, conclusive, confirmed, convincing, credible, determinative, efficacious, efficient, good, in force, irrefutable, just, kosher, lawful, legal, legit, legitimate, logical, official, original, persuasive, potent, powerful, proven, pure, solid, sound, stringent, strong, substantial, telling, tested, true, trustworthy, ultimate, unadulterated, unanswerable, uncorrupted, weighty, well-founded, well-grounded
Antonyms: invalid, unacceptable, unreal, unsound, wrong