What is the prefix for : caring , helpful tolerant matuse loyal sincere?

There isn't one single prefix that encompasses all of those words. However, you could use prefixes that capture different aspects of those qualities:

* Bene-: This prefix means "good" or "well," and relates to the positive aspects of those words. For example, "benevolent" means "kind" or "charitable," which aligns with "caring" and "helpful."

* Altr-: This prefix relates to "other" or "others," which is a key aspect of being helpful and tolerant. "Altruistic" means "unselfish" and "concerned for the welfare of others."

* For-: This prefix implies "strength" and "endurance," which connects to "loyal" and "tolerant." "Fortitude" means "strength of mind" and "courage."

* Ver-: This prefix signifies "truth," which is central to "sincere." "Veracity" means "truthfulness."

Ultimately, the best prefix will depend on the specific context and the specific word you're looking to modify.