What is the antonym for aesthetic?

There isn't one single perfect antonym for "aesthetic," as its meaning can be quite broad. It depends on the context and the specific aspect of "aesthetic" you want to contrast. Here are some possibilities:

For "aesthetic" meaning "relating to beauty or art":

* Unaesthetic: This is the most straightforward antonym, directly meaning "not aesthetically pleasing."

* Ugly: A more blunt and direct contrast to beauty.

* Unattractive: A softer, more neutral term for something that is not visually appealing.

* Crude: This suggests a lack of refinement or artistry.

* Tasteless: This implies a lack of good taste or judgment in aesthetics.

For "aesthetic" meaning "relating to the principles of beauty and taste":

* Functional: This emphasizes practicality over beauty.

* Utilitarian: Similar to "functional," this focuses on usefulness rather than aesthetics.

* Pragmatic: This highlights a focus on what is practical and sensible rather than what is beautiful or pleasing.

For "aesthetic" meaning "relating to the perception of beauty and form":

* Dysfunctional: This emphasizes a lack of coherence or order in form.

* Disorganized: This suggests a lack of structure or harmony in the form.

* Chaotic: This emphasizes the absence of order and a sense of disorder.

The best antonym for "aesthetic" depends on the specific context in which you are using it.