believable (adj.)

• conceivable
• convincing
• credible
• creditable
• fiduciary
• impressive
• likely
• meaningful
• persuasive
• plausible
• possible
• presumable
• probable
• rational
• reasonable
• reliable
• satisfying
• solid
• substantial
• supposable
• tenable
• trustworthy
• trusty
• unexceptionable
• unimpeachable
• unquestionable