I got someone who responded to me in one thread that said anything not in the top 10 is a stiff. If the callouts are bad when a song approaches the top 10, Does that make a song a stiff if it was able to go pretty far?
For the first several weeks of airplay, we don't know if a song is really going to be a hit. We added it because it sounded like a hit. It got extra points if it was by a big artist. But we just don't know.
We used to say that it took 100 plays to be able to research a song and find out if it was going to make it. Today, with so many audio sources to hear new music, that is just a vague guideline.
In any case, if we see a song score as neither positive or negative, we may leave it another week or two. If it is highly negative, it is gone. That is a stiff.
Sometimes a huge song, particularly ones that are novelties or have lyrics that wear thin, will be very positive and, suddenly, stiff out. They go from "great" to "dreadful" in one week at times. We kill them.
And different songs will decline in appeal as people get tired of them. Some are faster than others. And some continue to be positive, but we get scores that are "tired of but still like" and we rest the song or slow it way down.
Every PD has their own style and system. There are no rules.
But a "stiff" is a song that most listeners do not want to hear or no longer want to hear or never wanted to hear.