1. act of getting beyond shit-faced; like on a whole nother level of dunk.
2. from song "stupidfacedd" by wallpaper
Kristen: Did you see Keke at that party last night?
Sarah: Yeah, she got naked in the hot tub and ate a piece of cheese from the bottom of it.
Kristem: Yeah, that girl was stupidfacedd.
Taking a language with over half a million words and making up new words for it because of ignorance. This can also describe when a word is misspelled so often the spelling changes in the dictionary.
Words like refudiate, frenemy, and stupidiate are perfect examples. Also in the case of spelling changes, words like judgement which is now also spelled judgment fit this definition.