Chinese (Cantonese) mooî-tsaí, from mooî younger sister + tsaí little; akin to Chinese (Pekingese) mei4-tsai3 little younger sister, from mei4 younger sister + tsai3 child
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“Mui-tsai.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mui-tsai. Accessed 11 Dec. 2023.
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