This is one of those lovely old words that should be resurrected for every day use. Apparently it refers to the seemingly malevolent behaviour displayed by inanimate objects. I.e. that photocopier that can sense when you have a deadline and refuses to print your documents properly, or your computer at work that insists on taking a break when you are right in the middle of composing a letter, or how your keys inexplicably hide when you’re already late. All of these are examples of resistentialism.