plausible Synonyms

specious well-founded seeming sensible slick smooth smooth-tongued solid sophistic reliable reasonable philosophistic possible presumable presumptive probable ratiocinative rational reasoned sophistical sound truthlike thought out probabilistically odds on colourable well-grounded vindicable viable verisimilar veniable valid thinkable tenable tartuffish supposable supportable strong persuasive ostensive creditable credible credent convincible convincing convictive conjecturable conceivable compelling colorable