General synonyms:
* Respect
* Honor
* Pride
* Self-respect
* Decorum
* Propriety
* Grace
* Nobility
* Stateliness
Synonyms emphasizing inner strength and worth:
* Integrity
* Worthiness
* Value
* Self-worth
* Self-esteem
Synonyms emphasizing outward behavior:
* Poise
* Composure
* Bearing
* Courtesy
* Politeness
More specific synonyms:
* Magnanimity (forgiveness and generosity)
* Stoicism (endurance and composure in the face of adversity)
* Humility (modesty and lack of arrogance)
The best synonym to use will depend on the specific context.