When looking for alternatives to the phrase "true cat," there are several options to consider. For starters, "feline" is a commonly used term that can be substituted for "cat" in most contexts. Additionally, "lion," "tiger," "panther," and "leopard" are specific types of cats that can also be utilized as synonyms. Another option is the phrase "real cat," which conveys a similar meaning while also emphasizing the authenticity of the animal. Other possibilities include "domestic cat," "house cat," and "pet cat," which all describe the same type of animal but with varying levels of specificity. Ultimately, the best choice will depend on the context and intended meaning of the phrase.