The phrase "never failing" can be substituted with several synonyms to express the same meaning. Some of the synonyms include "unfailing," "infallible," "dependable," "reliable," "consistent," and "steadfast." These words signify something that can be trusted and relied upon without any doubts or hesitations. The phrase can be used to describe an individual, a process, a product, or a service that has consistently delivered excellent results. It implies a level of performance that is exceptional and consistent over time. Therefore, when describing something that can always be counted on, any of these synonyms can be used interchangeably with the phrase "never failing".