- Arabic: مَعْتُوه m (maʕtūh), مَجْنُون (ar) m (majnūn), مُخَبَّل m (muḵabbal)
- Bashkir: иҫәр (iśər), диуана (diwana), алйот (alyot), тиле (tile), йүләр (yülər), тинтәк (tintək), һантый (hantıy)
- Belarusian: шале́нец m (šaljénjec), вар'я́т m (varʺját), бязу́мец m (bjazúmjec)
- Bulgarian: луд (bg) m (lud), побъ́ркан (bg) m (pobǎ́rkan)
- Catalan: boig (ca)
- Chinese:
- Mandarin: 瘋子／疯子 (zh) (fēngzi), 狂人 (zh) (kuángrén), 瘋人／疯人 (zh) (fēngrén)
- Czech: šílenec (cs) m, blázen (cs) m
- Danish: galning c
- Dutch: dolleman (nl) m, gek (nl) f, krankzinnig (nl) m, waanzinnig (nl) m
- Esperanto: frenezulo n
- French: fou (fr) m, insensé (fr) m
- Galician: tolo (gl) m, louco (gl) m
- German: Irrer (de) m, Wahnsinniger (de) m, Verrückter (de) m
- Greek: τρελός (el) m (trelós)
- Hindi: दीवाना (hi) m (dīvānā), पागल (hi) m (pāgal), पगला (hi) m (paglā)
- Irish: fear mire m
- Italian: matto (it) m, pazzo (it) m
- Japanese: 狂人 (ja) (きょうじん, kyōjin), 気違い (ja) (きちがい, kichigai)
- Kikuyu: mũgũrũki class 1
- Kongo: kilawu
- Korean: 광인(狂人) (ko) (gwang'in), 미치광이 (ko) (michigwang'i)
- Latin: homo furiōsus m, dēmēns m (figurative)
- Latvian: ārprātīgais m, neprātis m
- Macedonian: луд m (lud), лудак m (ludak)
- Maori: ō
- Nandi: kipiyuo
- Norman: fo m
- Norwegian:
- Bokmål: galning m
- Ottoman Turkish: دلی (deli)
- Persian: دیوانه (fa) (divâne)
- Polish: szaleniec (pl) m, psychol (pl) m (pejorative), świr (pl) m (pejorative), szajbus (pl) m (pejorative), świrus m (pejorative), obłąkaniec m, pomyleniec m, postrzeleniec (pl) m (expressive), popierdoleniec (pl) m (vulgar), jebnięty (pl) (vulgar), czubek (pl) (pejorative), oszołom (pl) m (pejorative), pojebaniec (pl) m (vulgar), wariat (pl) m (pejorative)
- Portuguese: doido (pt) m, louco (pt) m, maluco (pt) m
- Russian: безу́мец (ru) m (bezúmec), сумасше́дший (ru) m (sumasšédšij), (colloquial) чо́кнутый (ru) m (čóknutyj)
- Serbo-Croatian:
- Cyrillic: лу̀ђа̄к m, лудак m
- Roman: lùđāk (sh) m, ludak (sh) m
- Slovak: šialenec m, blázon m
- Slovene: norec (sl) m, blaznež m
- Spanish: loco (es) m, trastronado m
- Sranan Tongo: lawman
- Swahili: chizi (sw)
- Swedish: dåre (sv) c, galning (sv) c
- Ukrainian: варія́т (uk) m (variját), безу́мець (uk) m (bezúmecʹ), божеві́льний (uk) m (boževílʹnyj), шале́нець m (šalénecʹ), божеві́лець (uk) m (boževílecʹ)
- Urdu: دیوانہ m (dīvānā), پاگل m (pāgal)
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