Oof:
A reaction word, normally used as a negative reaction;
but sometimes used as a sarcastic/funny/good reaction.
This word doesn't classify as neither an adjective, noun, or verb. It is an onomatopoeia. An onomatopoeia is a sound word like "bang!" or "kachow!"
Origin:
This word first showed up in the 19th century in England. It didn't gain momentum until recently in America. It is most likely reincarnated from "oofta" which mostly meant the same thing a few generations ago.
Similar words:
Dang, oh man, rekt, oh diddly darn
Why is it important?
Oof is important because this generation is facing a lot of conflict such as politics, stereotypes, ideals and other important matters.
Friend #1: "I just placed 2nd in Fortnite."
Friend #2: "Ooooof."
Friend #1: "Do you like my dinosaur socks?"
Friend #2: "OOF yes!"
Friend #1: "Oh my god I just totaled my car :("
Friend #2: "ooooooooooooooooooooooof"
Friend #2: "Ooooof."
Friend #1: "Do you like my dinosaur socks?"
Friend #2: "OOF yes!"
Friend #1: "Oh my god I just totaled my car :("
Friend #2: "ooooooooooooooooooooooof"