| English | eng-000 |
| chthonic | |
| Universal Networking Language | art-253 | chthonic |
| čeština | ces-000 | podsvětní |
| 普通话 | cmn-000 | 地府鬼神的 |
| 國語 | cmn-001 | 地府鬼神的 |
| Cymraeg | cym-000 | cthonig |
| Cymraeg | cym-000 | isfydol |
| Deutsch | deu-000 | chtonisch |
| eesti | ekk-000 | allmaailma- |
| eesti | ekk-000 | maa-alune |
| ελληνικά | ell-000 | χθόνιος |
| English | eng-000 | belowground |
| English | eng-000 | chthonian |
| English | eng-000 | mass rapid transit |
| English | eng-000 | nether |
| English | eng-000 | subterranean |
| English | eng-000 | subterraneous |
| English | eng-000 | subway |
| English | eng-000 | subway system |
| English | eng-000 | tube |
| English | eng-000 | ulterior |
| English | eng-000 | underground |
| suomi | fin-000 | ali- |
| suomi | fin-000 | ktoninen |
| suomi | fin-000 | ktooninen |
| suomi | fin-000 | maanalainen |
| français | fra-000 | chthonien |
| français | fra-000 | chtonien |
| हिन्दी | hin-000 | अधोलौकिक |
| हिन्दी | hin-000 | रसातली |
| português | por-000 | ctónico |
| português | por-000 | ctónio |
| português | por-000 | ctônico |
| português | por-000 | ctônio |
| русский | rus-000 | ктонический |
| русский | rus-000 | подземный |
| русский | rus-000 | хтонический |
| español | spa-000 | inferior |
| українська | ukr-000 | хтонічний |