resistentialist
/ˌrɛzɪˈstɛnʃəlɪst/ /ˌrɛzɪˈstɛnʃ(ə)lɪst/humorous (originally in the works of Paul Jennings)
adjective
Of a person: that advocates or believes in resistentialism; (of an inanimate object) hostile to humans.
noun
An advocate of or believer in resistentialism.
Origin
1940s. Humorous blend of either resist or French résister resist with existentialist, punning also on classical Latin rēs thing, things.