Options emphasizing satisfaction:
* Well-: This emphasizes a state of being "well-contented" (e.g., "He was well-contented with his life").
* Deeply-: This suggests a profound level of contentment (e.g., "She felt deeply contented in her new home").
Options emphasizing calmness:
* Peacefully-: This implies a state of tranquil contentment (e.g., "They lived peacefully contented lives").
* Serenely-: Similar to peacefully, but with a stronger emphasis on a sense of calmness (e.g., "She was serenely contented with her lot in life").
Options emphasizing happiness:
* Joyfully-: This suggests a sense of happiness stemming from contentment (e.g., "She was joyfully contented with her family").
Other options:
* Self-: This emphasizes contentment with oneself (e.g., "She was self-contented with her achievements").
Ultimately, the best prefix depends on the specific context and meaning you want to convey.