Internet words do not drift gradually the way most language does. They follow a steep, recognisable arc โ and the whole cycle now runs in about eighteen months rather than a generation.
The stages are consistent enough that you can usually place a word on the curve just by noticing who is using it.
Stage one: the in-group
A word starts inside a small community, where it does real work. It names something that did not previously have a name, and using it correctly signals that you are a member. At this stage the word is invisible from outside and genuinely useful.
Stage two: escape
The word crosses into a larger platform, usually carried by one popular post. Meaning starts to loosen immediately, because the new users have the word but not the context that produced it. Some of the original nuance is lost in the first week.

Stage three: saturation
Everyone has it. It appears in headlines. It gets a dictionary entry โ and being named a word of the year is very nearly a death certificate, because the honour is awarded at peak visibility rather than peak usefulness. Oxford picked selfie in 2013, goblin mode in 2022 and rizz in 2023, and in each case the word was already everywhere by the time it was announced.
At saturation the word means much less than it did. It has been stretched to cover adjacent things, and the original in-group has mostly stopped using it.
Stage four: the brands arrive
A company uses it in an advertisement. This is the point of no return. Nothing survives being said by a supermarket, and the people who used the word first will abandon it within weeks of this happening.
Stage five: irony, then death
The word gets used sarcastically for a while โ deliberately, to signal that you know it is finished. Then it stops appearing entirely, except as a time stamp. Coming across it later dates a piece of writing as precisely as a photograph would.
A small number of words skip death and become ordinary vocabulary instead. Spam, troll and meme all did this. The test seems to be whether the word names something durable that had no other name.

Why the cycle keeps getting faster
Three mechanisms compound. Algorithmic feeds spread a word to enormous audiences in days rather than months. Short video attaches words to sounds, which travel further than text. And there is now an entire commentary industry that explains new slang to outsiders, which drags words into stage three almost as soon as they reach stage two.
The explainer article is a genuinely novel accelerant. A word that is explained is a word that is finished, because the explanation hands it to exactly the people whose adoption kills it.
How to place a word on the curve
Ask who is using it and how confidently. If people use it without explaining it, it is early. If people are explaining it, it is mid. If people are explaining it in a headline, it is late. If a brand has used it, it is over. If it is being used sarcastically, it has been over for some months.
For a word currently somewhere around stage four, see what people mean when they say brainrot โ which, by the logic above, this very article is helping to finish off.