<s>Human: 给出以下三个单词的同义词：happy，big，quiet
happy, big, quiet
</s><s>Assistant: 以下是三个单词的同义词列表：

- Happy: joyful, delighted, pleased, contented, elated, cheerful, blissful, ecstatic, overjoyed
- Big: large, huge, gigantic, massive, enormous, tremendous, colossal, mammoth, substantial
- Quiet: silent, peaceful, calm, noiseless, hushed, serene, tranquil, still, muted
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