Direct opposites:
* Novelty: This refers to something new and original, the opposite of a well-worn saying.
* Innovation: This emphasizes the creation of something new and different.
Words that imply a lack of wisdom:
* Foolishness: This refers to something silly or unwise, the opposite of the wisdom often associated with adages.
* Nonsense: This indicates something meaningless or absurd, the opposite of the meaningful and often insightful nature of adages.
Words that highlight the lack of tradition:
* Unconventional: This refers to something that doesn't follow established norms or traditions, which is the opposite of how adages are often rooted in tradition.
* Original: This emphasizes something new and not based on existing ideas, unlike an adage.
The best antonym for "adage" will depend on the specific situation and what you want to emphasize.