This is the 16875th most frequent Polish word.
wymknie
"Wymknie" means "will slip out" or "will escape" in English.
Here, 'wymknie' is used to describe something unintentionally escaping.
Słowo wymknie mu się podczas rozmowy.
The word will slip out during the conversation.
In this context, 'wymknie' is used in a physical sense to indicate something escaping from hold.
Jeśli nie będziesz mnie trzymać, wymknie się.
If you don't hold me, it will slip away.
Here, 'wymknie' figuratively means escaping from control or assumptions.