Here are some references you can use to find synonyms for "angry":
* Online Thesaurus: Sites like Thesaurus.com, Merriam-Webster Thesaurus, or Dictionary.com offer extensive lists of synonyms.
* Print Thesaurus: A physical thesaurus can be helpful for browsing and exploring different words.
* Dictionary: Most dictionaries include synonym lists for common words like "angry."
* Writing Guides and Style Manuals: Resources like "The Elements of Style" or "Strunk & White" often include sections on word choice and synonyms.
Remember to choose synonyms that fit the context of your writing or speech. For example, "furious" is a stronger synonym for "angry" than "upset."