What is an antonym of gala?

There isn't a single perfect antonym for "gala" as it depends on the specific context. However, here are some options depending on the intended meaning:

If "gala" refers to a grand, festive event:

* Simple

* Informal

* Ordinary

* Unremarkable

* Mundane

* Dull

* Low-key

* Quiet

If "gala" refers to a splendid, luxurious appearance:

* Plain

* Simple

* Unpretentious

* Modest

* Unassuming

If "gala" refers to a joyful, celebratory mood:

* Mournful

* Somber

* Gloomy

* Depressed

The best antonym will depend on the specific situation and what aspect of "gala" you want to contrast.