(a.) Capable of existing or occurring\, or of being conceived or thought of; able to happen; capable of being done; not contrary to the nature of things; -- sometimes used to express extreme improbability; barely able to be, or to come to pass; as, possibly he is honest, as it is possible that Judas meant no wrong.

accomplishable achievable admissible advisable algorismic algorithmic aliquot attainable available between the lines cardinal cogitable conceivable conceivably possible contingent covert credible cryptic decimal delitescent differential digital doable dormant earthly esoteric even expedient exponential feasible figural figurate figurative finite fractional hibernating hidden humanly possible imaginable imaginary impair impossible infinite integral irrational latent likely logarithmic logometric lurking mortal muffled mystic negative numeral numerary numerative numeric obfuscated obscured occult odd on ordinal pair plausible positive potential practicable practical prime probable radical rational reachable real realizable reasonable reciprocal sleeping submerged submultiple surd tenable thinkable transcendental under the surface underlying unmanifested veiled viable virtual workable