The antonym for the word cheerful?

The antonym for cheerful depends on the specific context, but some common ones are:

General Antonyms:

* Sad

* Unhappy

* Gloomy

* Depressed

* Melancholy

* Dejected

* Downcast

* Dispirited

* Dour

* Morose

* Sullen

More Specific Antonyms:

* Solemn: If you're looking for a more formal opposite, this can work.

* Serious: This implies a lack of lightheartedness.

* Angry: This implies a negative emotional state.

* Grumpy: This implies a bad mood.

The best antonym to use will depend on the specific situation and the intended meaning.