What are some antonyms of the word cheerful?

Here are some antonyms of the word "cheerful," categorized for clarity:

General Negativity:

* Gloomy

* Depressed

* Downcast

* Sad

* Miserable

* Unhappy

* Dispirited

* Melancholy

* Sombre (more formal)

Anger/Frustration:

* Angry

* Frustrated

* Irritated

* Cross

* Grumpy

* Cranky

Neutral/Lack of Emotion:

* Apathetic

* Indifferent

* Unenthusiastic

* Dour

* Grim

Specific Situations:

* Nervous (in contrast to being cheerfully confident)

* Worried (in contrast to being cheerfully optimistic)

* Anxious (in contrast to being cheerfully carefree)

The best antonym for "cheerful" will depend on the specific context in which you're using it.