The phrase 'more expiring' refers to something that has a shorter remaining time before it expires or becomes invalid. Synonyms for this phrase include 'more perishable', 'more fleeting', 'more ephemeral', 'more transient', 'more short-lived', 'more impermanent', 'more evanescent', 'more momentary', and 'more fugacious'. All of these words imply a sense of impermanence or transience, emphasizing the importance of making the most of something while it lasts. Whether referring to food, opportunities, or experiences, these synonyms for 'more expiring' remind us to cherish the fleeting moments and appreciate the value of what we have before it is gone.