apparently good or right though lacking real merit; superficially pleasing or plausible

specious arguments.

pleasing to the eye but deceptive.

Obsolete . pleasing to the eye; fair.

adjective

real , true , valid

adjective

apparent , apparently right , beguiling , captious , casuistic , colorable , credible , deceptive , delusive , empty , erroneous , fallacious , false , flattering , hollow , idle , illogical , inaccurate , incorrect , likely , nugatory , ostensible , ostentatious , plausible , presumable , presumptive , pretentious , probable , seeming , sophistic , sophistical , sophisticated , spurious , unsound , untrue , vain , wrong , invalid , counterfactual , truthless , untruthful , colored , glossy , hypocritical , manifest , misleading , obvious , questionable , showy