dubious Antonyms

trustworthy soluble self-evident self-confident self-assured secure scrutable sanguine resolved resolvable solvable solved specific trusting true transpicuous transparent tangible sustainable sure steadfast staunch resolute reliable recognized plausible plain pistic perspicuous perceptible penetrable pellucid patency pandemic positive predicable predicative recognizable readable questionless proven provable probative probable presumable presentation palpable well-documented inoppugnable beyond dispute