When looking for antonyms for the phrase "more never failing," it is important to understand its meaning. It refers to something that is consistently reliable and trustworthy, with no exceptions. Therefore, its antonyms would be words that describe something that is untrustworthy or unreliable, such as "unreliable," "inconsistent," or "unstable." Other antonyms for "more never failing" might include "inconsistent," "unpredictable," "fickle," and "capricious." These words describe something that can't be relied upon consistently or that is subject to change without warning. Overall, "more never failing" is a positive phrase, whereas its antonyms are more negative and should be used with caution.