There are many synonyms that can be used to describe "perish foolishness", including "eliminate stupidity", "eradicate nonsense", "annihilate foolishness", and "abolish irrationality". All of these terms imply a desire to remove or destroy aspects of logic, thinking, or behavior that are considered foolish or unproductive. Other related words and phrases include "extinguish ignorance", "extirpate idiocy", "crush absurdity", and "vanquish folly". These synonyms are useful for those who wish to communicate a strong sense of determination or urgency in eliminating foolishness from their lives or from society as a whole.