Afrikaans: nagmerrie (nahkh-meh-ree)
Albanian: makth (mahkth)
Amharic: ሕማም ህልም (huh-mahm huhlm)
Arabic: كابوس (kah-boos)
Armenian: մղձավանջ (mugh-dzah-vanj)
Azerbaijani: kabus (kah-boos)
Basque: amesgaizto (ah-mess-gaihs-toh)
Belarusian: кашмар (kash-mar)
Bengali: দুঃস্বপ্ন (doo-shwo-pno)
Bosnian: noćna mora (nohch-na moh-rah)
Bulgarian: кошмар (kosh-mar)
Burmese: ဆိုးရွားသောအိပ်မက် (soh-ywa-thaw-ate-met)
Catalan: malson (mahl-son)
Cebuano: damgo nga daotan (dahm-goh ngah dah-oh-tan)
Chinese (Mandarin): 噩梦 (è-mèng)
Croatian: noćna mora (nohch-na moh-rah)
Czech: noční můra (nohch-nee moo-rah)
Danish: mareridt (mah-reh-rit)
Dutch: nachtmerrie (nahkht-meh-ree)
Esperanto: koŝmaro (kosh-mah-roh)
Estonian: õudusunenägu (eu-doo-soo-ne-nah-goo)
Finnish: painajainen (pai-nah-yai-nen)
French: cauchemar (kohsh-mar)
Galician: pesadelo (peh-sah-deh-loh)
Georgian: კოშმარი (kosh-mah-ree)
German: Alptraum (ahlp-trowm)
Greek: εφιάλτης (e-fi-al-tes)
Gujarati: ડરાવનુ સ્વપ્ન (dah-rah-vah-noo swop-nuh)
Haitian Creole: move rèv (moh-veh rehv)
Hausa: mafarki mara daɗi (mah-far-kee mah-rah dah-dee)
Hebrew: סיוט (see-yoot)
Hindi: बुरा सपना (boo-rah sup-nah)
Hungarian: rémálom (ray-mah-lom)
Icelandic: martröð (mar-treth)
Igbo: egwu egwu (eh-gwoo eh-gwoo)
Indonesian: mimpi buruk (meem-pee boo-rook)
Irish: tromluí (trom-loo-ee)
Italian: incubo (een-koo-boh)
Japanese: 悪夢 (ah-ku-moo)
Javanese: impen elek (eem-pen eh-lek)
Kannada: ಕೆಟ್ಟ ಕನಸು (keh-tah kah-nah-soo)
Kazakh: қорқынышты түс (kor-kuh-nish-tu tus)
Khmer: សុបិន្តអាក្រក់ (soh-bin ah-krok)
Korean: 악몽 (ahk-mong)
Kurdish: xewna xerab (khew-na khe-rahb)
Kyrgyz: жаман түш (zha-man tush)
Lao: ຝັນຮ້າຍ (fan-hai)
Latvian: murgs (moorgs)
Lithuanian: košmaras (kohsh-mah-ras)
Luxembourgish: Alpdram (ahlp-dram)
Macedonian: кошмар (kosh-mar)
Malagasy: nofy ratsy (noh-fee rah-tsee)
Malay: mimpi ngeri (meem-pee ng-eh-ree)
Malayalam: ദുസ്വപ്നം (doo-swap-num)
Maltese: ħolma kerha (hol-ma kehr-ha)
Maori: moemoeā kino (moh-eh-moh-eh-ah kee-noh)
Marathi: दुःस्वप्न (doo-swop-nuh)
Mongolian: хар дарсан зүүд (khar dar-san zood)
Nepali: नराम्रो सपना (nah-ram-ro sap-nah)
Norwegian: mareritt (mah-reh-ritt)
Odia: ଦୁଷ୍ସ୍ୱପ୍ନ (doo-swap-no)
Pashto: خوب بد (khob bad)
Persian: کابوس (kah-boos)
Polish: koszmar (kosh-mar)
Portuguese: pesadelo (peh-sah-deh-loh)
Punjabi: ਡਰਾਵਣਾ ਸੁਪਨਾ (dah-rah-vah-na soo-pnah)
Romanian: coșmar (kosh-mar)
Russian: кошмар (kosh-mar)
Samoan: miti leaga (mee-tee leh-ah-gah)
Serbian: ноћна мора (nohch-na moh-rah)
Shona: hope dzakaipa (hoh-peh dzah-kai-pah)
Sinhala: නරක සොබන (nah-rah-kah soh-ba-nah)
Slovak: nočná mora (noch-na moh-rah)
Slovenian: nočna mora (noch-na moh-rah)
Somali: riyo xun (ree-yo hoon)
Spanish: pesadilla (peh-sah-dee-yah)
Sundanese: impian goréng (eem-pee-yan goh-reng)
Swahili: jinamizi (jee-nah-mee-zee)
Swedish: mardröm (mahr-drem)
Tagalog: bangungot (bahng-oo-ngot)
Tajik: даҳшатбор хоб (dah-shat-bor khob)
Tamil: கெட்ட கனவு (keh-tah kah-na-voo)
Telugu: దుఃస్వప్నం (doo-swap-num)
Thai: ฝันร้าย (fan rai)
Tigrinya: ሕማም ሕልም (huh-mahm huhlm)
Turkish: kabus (kah-boos)
Turkmen: gorkunç düýş (gor-koonch doo-ish)
Ukrainian: кошмар (kosh-mar)
Urdu: بھیانک خواب (bhi-anak khwab)
Uzbek: dahshatli tush (dah-shat-lee toosh)
Vietnamese: cơn ác mộng (kuhn ahk mong)
Welsh: hunllef (hin-lehf)
Wolof: riwaadu juuf (ree-wah-doo joo-f)
Xhosa: iphupha elibi (ee-poo-pah eh-lee-bee)
Yiddish: שלעכטער חלום (shlekh-ter khah-loym)
Yoruba: ala buruku (ah-lah boo-roo-koo)
Zulu: iphupho elibi (ee-poo-poh eh-lee-bee)