The phrase "feathering nest" implies a sense of accumulation, often in the form of personal gain at the expense of others. Therefore, potential antonyms for "feathering nest" may include terms such as "giving back," "charity," and "selflessness." These words suggest a sense of generosity, philanthropy, and concern for others rather than simply focusing on one's own material accumulation. Alternatively, words such as "sacrifice," "deprivation," and "renunciation" may serve as antonyms, as they suggest putting aside personal gain and relinquishing material comforts in favor of personal or spiritual growth.