the.com/buzzword

means A term — often technical-sounding or trendy — that gets used so often, and so loosely, that it signals importance more than it conveys actual meaning.

from A straightforward compound of "buzz" (the excited chatter or hum of talk) and "word," coined in the 20th century — originally academic slang for jargon students memorized to sound impressive on exams without necessarily understanding it. The "buzz" evokes the drone of a word repeated so often in meetings and memos that it becomes background noise, humming with implied significance while carrying less and less actual content.