I know HN prefers long-form comments, but I doubt there's enough space for me to list every buzzword I would prefer to never hear again, because that set includes all of them.

I liked Newspeak better when it was just a plot device in a novel I had to read in high school. But have to deal with corporate Newspeak at work; I see other kinds of Newspeak from people who misuse social media for performative political/social activism, and euphemisms proliferate at such a pace that a Beowulf cluster rigged to emulate George Carlin's personality would burn out trying to catalogue them all.

'decentralized'

Especially services that advertise themselves as such but are obviously not, but their target demographic is too stupid to realize.