underline

pnpm dlx shadcn@latest add https://opensourceicon.com/r/gridicons/underline.json

<svg xmlns="http://www.w3.org/2000/svg" width="96" height="96" viewBox="0 0 24 24"><path fill="currentColor" d="M4 19v2h16v-2zM18 3v8a6 6 0 1 1-12 0V3h3v8c0 1.654 1.346 3 3 3s3-1.346 3-3V3z"/></svg>