Here are some possibilities of what you might be asking about:
* Using the prefix "dis-" in words: Do you want to avoid words that start with "dis-"? In that case, we need to know what specific words you want to replace. For example:
* Instead of "disagree," you could say "differ."
* Instead of "disappear," you could say "vanish."
* Instead of "disapprove," you could say "object."
* Using the word "dis" as a slang term: "Dis" is a slang abbreviation for "this" or "that." To avoid using this, you could simply say "this" or "that."
Please provide more context about what you want to avoid, and I can offer more specific suggestions.