Treasure-trove refers to a collection or hoard of valuable items, often hidden or discovered by chance. Its antonyms could include words like garbage, junk, waste, or even squalor. These terms evoke notions of uselessness, filth, and neglect. Perhaps the opposite of a treasure-trove would be a barren wasteland or a place devoid of riches. Other antonyms could include poverty, scarcity, or austerity, which emphasize the lack of abundance and luxury associated with treasure. In some contexts, however, antonyms for treasure-trove could also include words like simplicity, minimalism, or even enlightenment, which suggest a detachment from the material world and a focus on inner wealth.