_

low line

Unicode code point: U+005F

‿

undertie

Unicode code point: U+203F

⁀

character tie

Unicode code point: U+2040

⁔

inverted undertie

Unicode code point: U+2054

︳

presentation form for vertical low line

Unicode code point: U+FE33

︴

presentation form for vertical wavy low line

Unicode code point: U+FE34

﹍

dashed low line

Unicode code point: U+FE4D

﹎

centreline low line

Unicode code point: U+FE4E

﹏

wavy low line

Unicode code point: U+FE4F

＿

fullwidth low line

Unicode code point: U+FF3F