sōsho (草書) is a style of Chinese calligraphy. It is also known as cursive script and "grass style", although the kanji 草 in its name means "wild" rather than "grass" in this case.
Sōsho is one of the three central calligraphic styles, along with kaisho and gyōsho, and it is the roughest and least readable of them. Styles of sōsho can be subdivided further into
Sōsho forms of Chinese characters are the origin of the Japanese script hiragana, which developed from sōsho via a form of writing called man'yōgana. In Japan, sōsho was considered to be suitable for women, whereas reisho was considered to be suitable for men.