- not susceptible to pain or injury
- impassive or unmoved
WordReference Random House Unabridged Dictionary of American English © 2026
im•pas•si•ble
(im pas′ə bəl),USA pronunciation adj.
im•pas′si•bil′i•ty, im•pas′si•ble•ness, n.
im•pas′si•bly, adv.
- incapable of suffering pain.
- incapable of suffering harm.
- incapable of emotion;
impassive.
- Late Latin impassībilis. See im-2, passible
- Middle English 1300–50
im•pas′si•bly, adv.
Collins Concise English Dictionary © HarperCollins Publishers::
impassible /ɪmˈpæsəbəl/ adj rare