Inure means to harden or to accustom to some kind of hardship. For example, one could inure to cold or hunger.
There is no policy, practice,procedure, piece of equipment or change in regimen that is going to completely inure us against madmen. (USA Today)
Viewers inured to scenes of chaos can sometimes be moved by the disorienting sight of commonplace objects transformed by violence. (NY Times)
Now how about comparing the word “enure”?
According to my Chambers dictionary, enure is an alternate for inure; inure is the primary listing.