What is the antonym for tassels?

There isn't a perfect antonym for "tassels" because it depends on the context. Here are some options:

* Plain: If you're talking about something without embellishment, "plain" is a good antonym.

* Smooth: If you're talking about a surface, "smooth" could be an antonym if the tassels are creating a rough texture.

* Unornamented: If you're talking about something without any decorative elements, "unornamented" could be an antonym.

* Bare: If you're talking about something without any tassels at all, "bare" could be an antonym.

Ultimately, the best antonym will depend on what you're trying to convey.