Webster’s Revised Unabridged Dictionary · 1913
Imaginable
Im·ag′i·na·ble, a. [L. imaginabilis: cf. F. imaginable.] Capable of being imagined; conceivable.
Men sunk into the greatest darkness imaginable. Tillotson.
— Im·ag′i·na·ble·ness, n. — Im·ag′i·na·bly, adv.