Plausible1. (a.) Apparently valid, likely; probable; credible; as a plausible explanation.
2. (a.) Obtaining approbation; specifically pleasing; apparently right; specious; as, a plausible pretext; plausible manners; a plausible delusion.
3. (a.) Using specious arguments or discourse; as, a plausible speaker.
Thesaurus Entries
acceptable, admissible, apparent, apparently sound, believable, casuistic, cogent, cogitable, colorable, colored, conceivable, conceivably possible, contingent, credible, creditable, deceitful, deceptive, disingenuous, empty, fallacious, fiduciary, gilded, hollow, humanly possible, illusive, imaginable, insincere, jesuitic, just, justifiable, legitimate, likely, logical, meretricious, misleading, ostensible, overrefined, oversubtle, philosophistic, possible, potential, presentable, probable, rational, reasonable, reliable, sane, seeming, sensible, smooth, sophistic, sophistical, sound, specious, tenable, thinkable, tinsel, trustworthy, trusty, unexceptionable, unimpeachable, unquestionable, well-argued, well-founded, well-grounded, wholesome, worthy of faith