from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The state or condition of being impassible.
from the GNU version of the Collaborative International Dictionary of English
- adj. The quality or condition of being impassible; insusceptibility of injury from external things.
from The Century Dictionary and Cyclopedia
- n. The character or condition of being impassible, in either sense of that word.
- n. Synonyms Indifference, Insensibility, etc. See apathy.
impassable + -ability (Wiktionary)