Forever and days is a phrase that expresses eternal or infinite time. Synonyms for this phrase could be "for all time," "perpetually," "endlessly," or "eternally." Other related phrases might include "for all eternity," "until the end of time," "everlasting," or "immortal." These terms suggest a timeless or enduring quality that transcends the limits of mortal life and implies a sense of continuity or unbroken continuity. Whether expressing the love of two souls, the promise of an unending friendship, or the enduring power of nature, these synonyms capture the essence of the phrase "forever and days.