What is the Antonym for sweater?

There isn't a perfect one-word antonym for "sweater," as the opposite depends on the context. Here are some options, depending on what you mean:

If you're looking for something to wear instead of a sweater:

* Shirt (more generally)

* T-shirt (for warm weather)

* Tank top (for very warm weather)

* Dress (for women)

* Coat (for colder weather)

* Jacket (for colder weather)

If you're thinking of the material:

* Cloth (a broader term for fabric)

* Fabric (a broader term for material)

If you're focusing on the function:

* Cooling garment (a garment designed to keep you cool)

* Bare skin (not wearing anything at all)

Ultimately, the best antonym depends on the specific situation you're considering.