All smileys in this list work on both self-hosted WordPress and WordPress.com websites (as long as smileys haven’t been disabled in the site admin, anyway).
To include a graphic smiley, type a colon immediately before and after the text. Make sure there’s a space immediately before and after, so the WordPress software sees it as a smiley.
For detailed info, see the Using Smilies page in the WordPress Codex.
🙂 – smile
😀 – grin
🙁 – sad
😮 – eek
😯 – shock
😕 – ???
😎 – cool
😡 – mad
😛 – razz
😐 – neutral
😉 – wink
😆 – lol
😳 – oops
😥 – cry
👿 – evil
😈 – twisted
🙄 – eyeroll
❗ – !
❓ – ?
💡 – idea
➡ – arrow
– mrgreen
Not built in to WordPress, but should be
💩 – 💩 (this is a hex code; just copy and paste the text into the WordPress post editor in Text (not Visual) view.