General antonyms:
* Despair
* Grief
* Sorrow
* Dejection
* Dismay
* Gloom
* Misery
* Anguish
* Woe
Antonyms related to specific situations:
* Mourning (for a death)
* Disappointment (after a failed expectation)
* Frustration (after a setback)
* Indignation (in response to injustice)
* Fear (in response to danger)
The best antonym for "jubilation" will depend on the specific situation and the nuance you want to convey.