| English | eng-000 |
| mentally deficient | |
| Afrikaans | afr-000 | agterlik |
| dansk | dan-000 | åndsvag |
| Deutsch | deu-000 | schwachsinnig |
| eesti | ekk-000 | vaimsete puudujääkidega |
| English | eng-000 | backward |
| English | eng-000 | defective |
| English | eng-000 | delirious |
| English | eng-000 | dull of intellect |
| English | eng-000 | feeble-minded |
| English | eng-000 | foolish |
| English | eng-000 | half-witted |
| English | eng-000 | idiotic |
| English | eng-000 | imbecile |
| English | eng-000 | insane |
| English | eng-000 | intellectually dull |
| English | eng-000 | light-headed |
| English | eng-000 | mad |
| English | eng-000 | mentally handicapped |
| English | eng-000 | mentally retarded |
| English | eng-000 | retarded |
| English | eng-000 | silly |
| English | eng-000 | simple |
| English | eng-000 | simpleton |
| English | eng-000 | stupid |
| Esperanto | epo-000 | mense postrestanta |
| français | fra-000 | débile |
| français | fra-000 | débile mental |
| Frysk | fry-000 | efterlik |
| yn Ghaelg | glv-000 | lag-hastagh |
| magyar | hun-000 | gyengeelméjű |
| italiano | ita-000 | deficiente |
| Loglan | jbo-001 | minfiu |
| Duhlian ṭawng | lus-000 | a |
| Duhlian ṭawng | lus-000 | chhawih |
| Duhlian ṭawng | lus-000 | mi chhawih |
| Duhlian ṭawng | lus-000 | â |
| Nederlands | nld-000 | achterlijk |
| Nederlands | nld-000 | achterlijk |
| русский | rus-000 | психически неполноценный |
| русский | rus-000 | слабоумный |
| русский | rus-000 | умственно неполноценный |
| español | spa-000 | subnormal |