Kittycat is a common term that people use to refer to domestic felines, but there are plenty of other synonyms you can use instead. Some of the more traditional options include "cat," "feline," and "tomcat," while others might prefer to use more playful words like "tabby," "puss," "kitty," or "whiskerface." There are also regional or colloquial terms, such as "moggie" in the UK, "gato" in Spanish-speaking countries, or "neko" in Japanese. Ultimately, the choice of synonym depends on the context and tone of the conversation, but there are certainly plenty of words that can be used in place of "kittycat".