Squiggled

Wolfram Kernel

Execution environment

Package

Underlines text or expression

Squiggled[expr_, color_:Lighter[Red]]

It resolves into a subset of Style

Example

Style[If[!DictionaryWordQ[#], Squiggled[#], #], 14] & /@ 
 TextWords[ExampleData[{"Text", "TheRaven"}]][[;; 45]]