Synonyms: insane, mad, nuts, barmy, lunatic, wild, wacky, meshugga, bonkers
| Part of speech | adjective |
|---|
| Afrikaans | kranksinnig |
|---|---|
| Catalan | boig boja; foll |
| Chinook Jargon | klisi; piltən |
| Czech | bláznivý; šílený |
| Danish | sindssyg |
| Dutch | gek; krankzinnig; stapel |
| Esperanto | freneza |
| Faeroese | vitleysur |
| Finnish | hullu |
| French | cinglé |
| German | irre; verrückt; irrsinnig |
| Italian | matto |
| Latin | amens; astrosus; ceritus; cerebrosus; demens; cerritus |
| Malay | gila |
| Papiamento | loko |
| Portuguese | insano; louco |
| Russian | безумный |
| Saterland Frisian | dul; in sin Woan; maal; rappelich; roasend; truchtroald |
| Spanish | loco |
| Sranan | law |
| Swedish | galen; tokig |
| Tagalog | loko |
| Thai | บ้า |
| Turkish | çılgın |
| West Frisian | dûm; dwylsinnich; sljochtsinnich |