The phrase "are consistent" can be replaced with a variety of synonyms that convey the same meaning. For example, one might use "are steady," "are reliable," or "are constant." Other synonyms include "are uniform," "are unvarying," "are unwavering," and "are stable." These synonyms all suggest that something remains the same over time and do not vary according to circumstances or other factors. They imply a sense of dependability and trustworthy behavior, which can be important in a wide range of contexts, from scientific research to personal relationships. Choosing the right synonym will depend on the specific context in which the phrase is being used.