1) Believable 2) Capable of being imagined 3) Conceivable 4) Feasible 5) Likely 6) Not beyond belief 7) Not too far-fetched 8) Plausible 9) Possible 10) Thinkable Found on https://www.crosswordclues.com/clue/imaginable
Im·ag'i·na·ble adjective [ Latin imaginabilis : confer French imaginable .] Capable of being imagined; conceivable. « Men sunk into the greatest darkness imaginable .» Tillotson. -- Im*ag'i*na*ble*ness , noun -- Im*ag'i... Found on http://www.encyclo.co.uk/webster/I/10