adj. 1. Not subject to suffering, pain, or harm. 2. Unfeeling; impassive. [Middle English, from Old French, from Late Latin impassibilis : in-, not; see IN-1 + passibilis, passible; see PASSIBLE.] im·pas′si·bili·ty, im·passi·ble·ness n. im·passi·bly adv. |
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