feminine or negative principle in Chinese philosophy, 1670s, from Chinese (Mandarin) yin, said to mean "female, night, lunar," or "shade, feminine, the moon." Compare yang. Yin-yang is from 1850.
the interaction of yin and yang maintains the harmony of the universe
Yid
Yiddish
yield
yielding
yikes
yin
yins
yip
yippee
Yippie
-yl
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