What is the antonym for gloomy?

The antonym for gloomy depends on the specific context. Here are a few options:

General antonyms:

* Cheerful

* Happy

* Bright

* Sunny

* Joyful

* Optimistic

* Hopeful

More specific antonyms:

* Lighthearted (if the gloom is about a heavy mood)

* Invigorating (if the gloom is about a dull atmosphere)

* Energetic (if the gloom is about a lack of energy)

* Lively (if the gloom is about a lack of excitement)

* Jubilant (if the gloom is about a lack of joy)

The best antonym for "gloomy" will depend on the specific situation and the meaning you want to convey.