The phrase "for evermore" can be replaced with a variety of synonyms to convey a similar meaning. Some of these synonyms include "eternally," "perpetually," and "incessantly." "Forever," "endlessly," and "unceasingly" are other options that can be used in place of "for evermore." Similarly, "forever and always," "in perpetuity," and "for all time" also convey the sense of something lasting endlessly. When trying to convey an idea of something permanent or unchangeable, these synonyms can be used interchangeably with "for evermore" to emphasize the concept of infinity or eternity.