(a.) Capable of being conceived, imagined, or understood.

apparent appreciable apprehensible ascertainable believable cogitable cognizable colorable comprehensible conceivably possible contingent credible discernible discoverable distinguishable earthly fanciable fiduciary graspable humanly possible imaginable knowable likely mortal perceptible plausible possible potential prehensible probable reasonable recognizable reliable seizable supposable tenable thinkable trustworthy trusty understandable unexceptionable unimpeachable unquestionable worthy of faith