A strong bad smell.
"The old gym bag started to stink so badly that everyone had to open a window before they could enter the room."
To have a strong bad smell.
"The garbage can had started to stink after sitting out in the sun all day."
Bad; inferior; worthless.
"That movie was absolute stink, a total waste of time that no one should bother watching."
The word "stink" comes from the Old English verb stincan, which originally meant "to push, thrust, or strike." This root traces back to Proto-Indo-European languages, where it carried those same forceful meanings before evolving into its current sense of emitting a bad smell.