illacerable

from The Collaborative International Dictionary of English v.0.48

Illacerable \Il*lac"er*a*ble\, a. [L. illacerabilis: cf. F.
   illac['e]rable. See {In-} not, and {Lacerable}.]
   Not lacerable; incapable of being torn or rent. [Obs.]
   [1913 Webster]