"Yeet" and "Oof" are now considered words. They're just two of over 300 words added on Wednesday by Dictionary.com. The new additions are linked to multiple categories like the coronavirus, race and technology. The website says the new list realizes how society is changing and at the same time "reveals our boundless creativity and ingenuity."
In case you are wondering, here are the definitions of Yeet and Oof:
yeet [ yeet ]
interjection
(an exclamation of enthusiasm, approval, triumph, pleasure, joy, etc.):If we're lucky, all of Wisconsin will be yelling “Yeet!” when the Packers make a second trip to Tampa this year.
verb (used with object)
to hurl or move forcefully: Somebody just yeeted a water bottle into the crowd. He's an early riser, so his mom never had to yeet him out of bed!
verb (used without object)
to move forcefully or quickly: My cat yeeted out of there in a big hurry.
oof [ oof ]
interjection
(an exclamation used to sympathize with someone else’s pain or dismay, or to express one’s own): Oof, that conversation must’ve been so awkward and hurtful! Oof, I've got tons of schoolwork to do this week.