There are many synonyms for the term "ex-claims" which can be used to replace this term and provide variety in speech and writing. Some of the most commonly used synonyms for "ex-claims" include "asserts," "affirms," "proclaims," "avows," "declares," "states," and "says." Each of these synonyms have similar meanings to "ex-claims" and can be used interchangeably to express the act of making a claim or statement. It's important to choose the right synonym depending on the context and tone of your speech or writing, as the subtle differences between these synonyms can help you communicate your message more effectively.