The word "pre-destining" refers to the act of deciding or determining something beforehand. Antonyms of this word include "undetermined," "unpredictable," and "open-ended." When something is undetermined, it means that there is no pre-decided outcome, and the future remains uncertain. Similarly, unpredictable means that there are too many variables at play, making it impossible to determine the outcome beforehand. On the other hand, having an open-ended situation means that the possibilities are endless, and the outcome is not predetermined. These antonyms provide a different perspective; they show that sometimes, it's better to leave the outcome open and undefined rather than pre-destining it.