The phrase "feathers one's nest" refers to the act of accumulating wealth or material possessions for personal gain, often at the expense of others. Synonyms for this phrase may include "greedily amassing wealth," "hoarding resources," or "selfishly profiting." Other phrases that convey a similar meaning include "lining one's pockets," "filling one's coffers," or "padding one's bank account." Each of these phrases implies a focus on personal enrichment, often achieved through dubious or morally questionable means. In contrast, more virtuous phrases might describe accumulating wealth as a means of securing one's future, providing for one's family, or giving back to others.