However, when talking about characters, the term "suffix" doesn't have a standard meaning. It's not a grammatical element like it is with words.
It's possible you're thinking of something else. Can you provide more context? For example:
* Are you asking about a specific type of character, like a special symbol or a specific character set?
* Are you interested in the way characters are represented in code?
* Is there a specific context where "suffix" is being used in relation to characters?
Please provide more information so I can understand your question better.