The hiragana syllable そ (so). Its equivalent in katakana is ソ (so). It is the fifteenth syllable in the gojūon order; its position is さ行お段 (sa-gyō o-dan, “row sa, section o”).

粗: / 疎:

祖先: ancestor

necessary evil

necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

unnecessary

needlessness

(historical, offensive) the lowest group in Japan’s caste system during the Edo period

a female given name

(idiomatic) more or less