- Aari: isimanna
- Abkhaz: аиашьа (ajaša)
- Acehnese: aduen
- Adyghe: шы (šə)
- Afar: saqal
- Afrikaans: broer (af), boetie
- Aghwan: 𐕛𐔼𐕖𐔼 (viči)
- Ainu: ユポ (yupo) (elder)
- Akkadian: 𒋀 (aḫu)
- Albanian: vëlla (sq)
- Amharic: ወንድም (am) (wändəm)
- Andi: воцци (vocci)
- Angor: ranihı
- Apache:
- Western Apache: bikʼisn
- Arabic: أَخ (ar) m (ʔaḵ), شَقِيق (ar) m (šaqīq)
- Egyptian Arabic: أخ m (ʔaḵḵ) (plural: إخوات (ʔixwāt))
- Gulf Arabic: أخو m (ʔuḵu)
- North Levantine Arabic: أخ m (ʔaḵḵ), خي m (ḵayy) ((Lebanon))
- South Levantine Arabic: أخو m (ʔaḵu), أخ m (ʔaḵḵ)
- Aragonese: chirmán (an) m
- Aramaic:
- Assyrian Neo-Aramaic: ܐܲܚܵܐ m (āḳa), ܐܲܚܘܿܢܵܐ m (āḳona)
- Classical Syriac: ܐܚܐ m (ʾăḥā)
- Jewish Aramaic: אַחָא m (ʾaḥā)
- Archi: у́шду (úšdu)
- Argobba: እህ (ǝh)
- Armenian: եղբայր (hy) (eġbayr), ախպեր (hy) (axper)
- Old Armenian: եղբայր (ełbayr)
- Aromanian: frati (roa-rup) m, frate (roa-rup) m
- Assamese: ভাই (bhai)
- Asturian: hermanu (ast) m
- Avar: вац (wac)
- Aymara: jilata, jila (ay)
- Azerbaijani: qardaş (az)
- Bakhtiari: گگه (gage)
- Balinese: nyama muani
- Baluchi: برات (barát)
- Bashkir: ағай (ağay) (elder); ҡусты (qustı), эне (ene), мырҙа (mırźa) (younger)
- Basque: anaia (eu) (brother of a male), neba (eu) (brother of a female)
- Bavarian: bruada
- Belarusian: брат m (brat)
- Bengali: ভাই (bn) (bhai), (literary) ভ্রাতা (bn) (bhrata), বেরাদর (bn) (berador)
- Bhojpuri: भाई (bhāī)
- Bislama: brata
- Breton: breur (br) m, breudeur (br) pl
- Bulgarian: брат (bg) m (brat)
- Burmese: အကို (a.kui) (elder), ညီ (my) (nyi) (younger), မောင် (my) (maung) (younger, for females)
- Buryat: аха (axa) (elder), дуу (duu) (younger)
- Carpathian Rusyn: брат m (brat)
- Catalan: germà (ca) m
- Central Atlas Tamazight: ⴳⵎⴰ (gma)
- Chakma: please add this translation if you can
- Eastern Cham: please add this translation if you can
- Western Cham: please add this translation if you can
- Cham:
- Chechen: ваша (vaša)
- Cherokee: (opposite sex of speaker) ᎤᏙ (udo), ᏗᎾᏓᏅᏟ (dinadanvtli)
- Chinese:
- Cantonese: 哥哥 (go1-4 go1) (elder), 弟弟 (dai6-4 dai6-2) (younger), 兄弟 (hing1 dai6) (brothers), 大佬 (daai6 lou2) (elder), 細佬/细佬 (yue) (sai3 lou2) (younger), 阿哥 (aa3 go1) (elder)
- Dungan: гәгә (gəgə) (elder), щүнди (xündi) (younger)
- Hokkien: 阿兄 (zh-min-nan) (a-hiaⁿ) (elder), 小弟 (zh-min-nan) (sió-tī) (younger), 兄弟 (zh-min-nan) (hiaⁿ-tī) (brothers), 哥哥 (zh-min-nan) (ko--koh, ko-ko) (elder), 兄哥 (zh-min-nan) (hiaⁿ-ko) (elder), 大兄 (zh-min-nan) (tōa-hiaⁿ) (elder), 大哥 (tōa-ko) (elder)
- Mandarin: 哥哥 (zh) (gēge) (elder), 弟弟 (zh) (dìdi) (younger), 兄弟 (zh) (xiōngdì) (brothers)
- Teochew: 阿兄 (a1 hian1) (elder), 阿弟 (a1 di6) (younger)
- Chinook Jargon: ow, kahpo
- Chuvash: ар тӑван (ar t̬ăvan)
- Comanche: tami (younger), pabi (elder)
- Coptic: ⲥⲟⲛ (son)
- Corsican: fratellu (co) m, frateddu (co) m
- Crimean Tatar: ağa (elder brother; in the northern dialect: aqa), qardaş (younger brother), kadâ (in the northern dialect: mata)
- Czech: bratr (cs) m, brácha (cs) m (colloquial), brat (cs) m (poetic), brater m (dialectal)
- Dalmatian: frutro m
- Danish: broder (da) c, bror (da) c
- Dhivehi: ކޮއްކޮ (kokko), ބޭބެ (bēbe)
- Dolgan: убай, бий
- Dutch: broer (nl) m, broeder (nl) m (formal)
- Dzongkha: བུ་སྤུན (bu spun), ཕོ་རྒནམ (pho rganm) (elder), ནུ་གཅུང (nu gcung) (younger)
- Egyptian: (sn)
- Elfdalian: bruor m
- Erzya: леля (ľeľa), ялакс (jalaks)
- Esperanto: frato (eo)
- Estonian: vend (et), veli (et)
- Even: акан (akan), нө (nö)
- Evenki: акин (akin), нэкун (nəkun)
- Ewe: nɔviŋutsu (brother), fo (elder brother), tsɛ (younger brother)
- Faroese: bróðir (fo) m, beiggi (fo) m
- Fataluku: kaka (elder brother), noko (younger brother)
- Finnish: veli (fi)
- French: frère (fr) m
- Friulian: fradi m
- Galician: irmán (gl) m
- Ge'ez: እኅው (ʾəḫw)
- Georgian: ძმა (ʒma)
- German: Bruder (de) m
- Alemannic German: Brüeder m
- Gooniyandi: marna (elder)
- Greek: αδελφός (el) m (adelfós), αδερφός (el) m (aderfós)
- Ancient: ἀδελφός m (adelphós), κάσις m (kásis) (Poetic)
- Greenlandic: qatanngut angut m, angaju, nuka, ani, aqqaluk
- Gujarati: ભાઈ (gu) m (bhāī), માજાયો m (mājāyo), બંધુ m (bandhu), સહોદર m (sahodar)
- Haitian Creole: frè
- Hausa: ɗanuwa
- Hawaiian: kaikuaʻana
- Hebrew: אָח (he) m (akh)
- Higaonon: sulud ma-ama
- Hindi: भाई (hi) m (bhāī), भ्राता (hi) m (bhrātā), सहोदर (hi) m (sahodar), बिरादर (hi) m (birādar), दादा (hi) m (dādā), भाऊ (hi) m (bhāū), वीर (hi) m (vīr), बंधु (hi) m (bandhu), भैया (hi) m (bhaiyā), भ्रातृ m (bhrātŕ)
- Hungarian: fivér (hu), fiútestvér (hu), bátya (hu) (elder brother), öcs (hu) (younger brother)
- Icelandic: bróðir (is), brói m (colloquial)
- Ido: fratulo (io)
- Igbo: nwanne nwoke
- Ilocano: kabsat a lalaki, kabagis, manong (elder brother), ading a lalaki (younger brother)
- Indonesian: saudara (id) n (male sibling), kakak laki-laki m (elder brother)* Indonesian: saudara (id) n (male sibling), kakak laki-laki m (elder brother), abang (id) m (elder brother), adik laki-laki m (younger brother)
- Ingrian: veljä, veli, vello, velvyt, veikko, velipoika
- Ingush: воша (voša)
- Interlingua: fratre (ia)
- Iranun: please add this translation if you can
- Irish: deartháir m
- Istriot: fra m
- Istro-Romanian: fråte m
- Italian: fratello (it) m
- Jamaican Creole: broda, breda
- Japanese: 兄弟 (ja) (きょうだい, kyōdai) (male sibling), 兄 (ja) (あに, ani) (elder), お兄さん (ja) (おにいさん, oniisan) (elder, honorific), 兄ちゃん (にいちゃん, nīchan) (big brother), 弟 (ja) (おとうと, otōto) (younger), ブラザー (ja) (burazā) (colloquial, ironic or humorous)
- Javanese: kangmas m (elder brother), dimas m (younger brother)
- Kabuverdianu: irmon, armun
- Kalmyk: дү (dü)
- Kannada: ಅಣ್ಣ (kn) (aṇṇa) (elder), ತಮ್ಮ (kn) (tamma) (younger), ಸಹೋದರ (kn) (sahōdara)
- Karachay-Balkar: къарнаш (qarnaş) (Karachay), къарындаш (qarındaş) (Balkar)
- Karelian: velli
- Kashmiri: بوے (ks) (bōē)
- Kashubian: brat m
- Kazakh: аға (kk) (ağa) (elder), іні (kk) (ını) (younger)
- Khmer: បងប្រុស (bɑɑng proh) (elder), ប្អូនប្រុស (pʼoun proh) (younger), ភាតរ (phéatrô), ភាតា (km) (phiətaa)
- Khoekhoe: ǃgâsab
- Komi-Permyak: вон (von)
- Korean: 형제(兄弟) (ko) (hyeongje), 형(兄) (ko) (hyeong) (elder, of a male), 형님 (ko) (hyeongnim) (elder, of a male, honorific), 오빠 (ko) (oppa) (elder, of a female), 남동생(男同生) (ko) (namdongsaeng) (younger), 동생(同生) (ko) (dongsaeng) (younger sibling, both genders), 아우 (ko) (au), 브라더 (beuradeo) (colloquial, ironic or humorous), 오라버님 (orabeonim)
- Kumyk: къардаш (qardaş), эр къардаш (er qardaş)
- Kurdish:
- Central Kurdish: بِرا (ckb) (bira)
- Laki: بِرا (ku) (bira)
- Northern Kurdish: bira (ku) m
- Southern Kurdish: بِرا (ku) (bira)
- Kyrgyz: байке (ky) (bayke), ага (ky) (aga) (elder), ини (ky) (ini) (younger)
- Ladin: please add this translation if you can
- Ladino: ermano
- Lak: уссу (us:u)
- Lao: ອ້າຍ (ʼāi) (elder), ນ້ອງຊາຍ (nǭng sāi) (younger)
- Latgalian: bruoļs
- Latin: frāter (la) m, germānus (la)
- Latvian: brālis (lv) m
- Ligurian: fræ
- Lithuanian: brolis (lt) m
- Livonian: veļ
- Lombard: fradell (lmo)
- Low German: Broder (nds) m, Brauder m, Broer m, Bruer m
- Luganda: ow'oluganda
- Luhya: wandaywe©
- Luxembourgish: Brudder (lb) m
- Lycian: 𐊏𐊚𐊏𐊆 m (nẽni)
- Macedonian: брат (mk) m (brat)
- Maguindanao: pagali, lusud sa tian
- Makasae: kaka (elder brother), noko (younger brother)
- Malagasy: anadahy (mg)
- Malay:
- Jawi: ابڠ (ms) (elder), اديق للاکي (younger)
- Rumi: abang (ms) (elder), adik lelaki (younger)
- Malayalam: സഹോദരന് (sahōdaraṉ), ചേട്ടൻ (ml) (cēṭṭaṉ) (elder), അനിയന് (aniyaṉ) (younger), ഇക്ക (ml) (ikka) (used by Muslims)
- Maltese: ħu (mt)
- Manchu: ᠠᡥᡡᠨ (ahūn) (elder), ᡩᡝᠣ (deo) (younger)
- Manx: braar m
- Maori: tuakana (elder), teina (younger), tungāne (of a female), taina (younger, of a male), tuakana (elder, of a male), hāmua (elder)
- Maranao: pagari
- Marathi: भाऊ m (bhāū)
- Mari:
- Eastern Mari: иза (iza) (older brother), шольо (šoĺo) (younger brother)
- Western Mari: ӹзӓ (ÿzä) (older brother), шоля (šoĺa) (younger brother)
- Mauritian Creole: frer
- Mazanderani: برار (berâr)
- Mi'kmaq: nidap
- Minangkabau: uda (min) (elder brother), udo (elder brother), ajo (min) (elder brother), ombak (min) (elder brother), uwan (min) (elder brother), uwen (elder brother), adiak (min) (younger brother)
- Mirandese: armano m
- Mòcheno: pruader m
- Moksha: альняка (aľńaka), пяльне (päľńe)
- Mon: please add this translation if you can
- Mongolian:
- Cyrillic: ах (mn) (ax) (elder), дүү (mn) (düü) (younger), ах дүү (mn) (ax düü) (brothers in general but including both elder and younger brothers)
- Nanai: ага (aga), нэил (neil)
- Navajo: atsilí (younger), ánaaí (elder)
- Neapolitan: frate m
- Nepali: दाजु (ne) (dāju)
- Nheengatu: mú (of a man), kiwira (of a woman)
- Nivkh: асӄ (asq), асӄа (asqa), ыкын (əkən), ыкына (əkəna), атик (ațik)
- North Frisian: brouder m (Mooring), bruler m (Föhr-Amrum), Bröđer c (Sylt)
- Northern Ohlone: ták̄a (elder), táusíkís (younger), ká̄nak tausík̄is
- Northern Sami: viellja
- Norwegian:
- Bokmål: bror (no) m, broder m
- Nynorsk: bror m, broder m
- Nupe: yégi bagi
- Occitan: fraire (oc) m
- Odia: ଭାଇ (or) (bhāi)
- Ojibwe: nishiime (my younger brother), nisayenh (my elder brother), niijikiwenh
- Okinawan: ゐきー (wikī) (of a female)
- Old Church Slavonic:
- Cyrillic: братръ m (bratrŭ)
- Glagolitic: ⰱⱃⰰⱅⱃⱏ m (bratrŭ)
- Old Czech: brach m
- Old East Slavic: братъ m (bratŭ)
- Old English: brōþor m
- Old Javanese: ari
- Old Norse: bróðir m, barmi m
- Old Occitan: frayre
- Old Prussian: brāti m
- Old Saxon: brōthar m
- Oromo: obboleessa
- Ossetian: (please verify) ӕнсувӕр (ænsuvær) (Digor), (please verify) ӕрвадӕ (ærvadæ) (Digor), ӕфсымӕр (æfsymær) (Iron), ӕрвад (ærvad) (Iron)
- Pali: bhātar m
- Pannonian Rusyn: брат m (brat)
- Pashto: ورور (ps) m (wror)
- Pennsylvania German: Bruder m
- Persian:
- Dari: بَرَادَر (fa) (barādar), لَالَا (fa) (lālā) (elder), اَخ (fa) (ax)
- Iranian Persian: بَرادَر (fa) (barâdar), داداش (fa) (dâdâš), اَخ (fa) (ax)
- Phoenician: 𐤀𐤇 (ʾḥ)
- Piedmontese: frèl m, fradel m
- Plautdietsch: Brooda (nds) m
- Polabian: brot m
- Polish: brat (pl) m pers, brachol (pl) m (colloquial), braciszek (pl) m (colloquial)
- Portuguese: irmão (pt) m
- Punjabi: ਵੀਰ (vīr)
- Q'eqchi: as
- Quechua: turi, wawqi
- Rohingya: bai
- Romagnol: fradël m
- Romani: phral m
- Kalo Finnish Romani: phaal m
- Romanian: frate (ro) m
- Romansch: frar m
- Russian: брат (ru) m (brat), бра́тец (ru) m (brátec) (colloquial), брати́шка (ru) m (bratíška) (colloquial), брата́н (ru) m (bratán) (slang)
- Saho: sacal
- Samoan: uso
- Sanskrit: भ्रातृ (sa) m (bhrātṛ)
- Sardinian: fràde m
- Scots: brither, brar
- Scottish Gaelic: bràthair (gd) m
- Serbo-Croatian:
- Cyrillic: бра̏т m
- Roman: brȁt (sh) m
- Seri: aacaz (younger brother of a female)
- Seychellois Creole: frer
- Sicilian: frati (scn) m
- Sidamo: rodo
- Sikkimese: please add this translation if you can
- Silesian: brat m
- Sindhi: ڀاءُ m
- Sinhalese: අය්යා (ayyā) (elder), මල්ලි (malli) (younger)
- Slovak: brat (sk) m
- Slovene: brat (sl) m
- Slovincian: brat
- Somali: walaal
- Sorbian:
- Lower Sorbian: bratš m
- Upper Sorbian: bratr (hsb) m
- Southern Altai: ини (ini) (younger), ака (aka) (elder), карындаш (karïndaš)
- Spanish: hermano (es) m
- Sranan Tongo: brada
- Sumerian: 𒋀 (ŠEŠ)
- Sundanese: akang (su), aa (su), (elder brother) raka m, rayi, (younger brother) dédé m
- Svan: მუხვბე (muxvbe) (for a brother), ჯჷმილ (ǯəmil) (for a sister)
- Swahili: ndugu (sw), kaka (sw)
- Swedish: bror (sv) c, broder (sv) c (elder/more formal), brorsa (sv) c (colloquial)
- Tagalog: kapatid na lalaki (brother), kuya (tl) (elder brother), totoy (younger brother), diko (second eldest brother), sangko (third eldest brother), siko (fourth eldest brother)
- Tajik: бародар (tg) (barodar), ах (tg) (ax)
- Talysh: (please verify) بوه (bəva) (Anbarani), (please verify) برا (bərâ) (Asalemi)
- Tamil: சகோதரன் (ta) (cakōtaraṉ), அண்ணன் (ta) (aṇṇaṉ) (elder), தம்பி (ta) (tampi) (younger)
- Taos: pʼǫ́yna (younger), pòpóna (elder)
- Tarifit: uma m
- Tat: birar
- Tatar: абый (tt) (abıy) (elder), абзый (tt) (abzıy), эне (tt) (ene) (younger)
- Tausug: magolang, manghūd
- Telugu: అన్న (te) (anna) (elder), తమ్ముడు (te) (tammuḍu) (younger), సోదరుడు (te) (sōdaruḍu) (somewhat formal)
- Tetum: maun
- Thai: พี่ (th) (pîi) (elder), พี่ชาย (th) (pîi-chaai) (elder), น้อง (th) (nɔ́ɔng) (younger), น้องชาย (th) (nɔ́ɔng-chaai) (younger), ภราดร (th) (pá-raa-dɔɔn), ภราดา (th) (pá-raa-daa)
- Tibetan: ཇོ་ཇོ (jo jo) (elder), ཅོ་ཅོག (co cog) (elder), ཇོ་ལགས (jo lags) (elder, honorific), འོག་མ ('og ma) (younger), ནུ་བོ (nu bo) (younger), ཨོ་ལགས (o lags) (younger, honorific)
- Tigrinya: ሓወ (ḥawä)
- Tocharian A: pracar
- Tocharian B: procer
- Tongan: tokoua, tuonga'ane
- Tundra Nenets: ня (nya)
- Turkish: erkek kardeş (tr), kardeş (tr), birader (tr), ağabey (tr) (elder), abi (tr) (elder, colloquial)
- Turkmen: dogan
- Turoyo: ܐܰܚܘܢܳܐ (aḥuno)
- Tuvan: акы (akı), дуңма (duñma)
- Udi: вичи (viči)
- Udmurt: брат (brat), агай (agaj), нюня (ńuńa), вын (vyn)
- Ugaritic: 𐎀𐎃 (ảḫ)
- Ukrainian: брат (uk) m (brat)
- Urdu: بھائی (ur) m (bhāī), بْھراتا m (bhrātā)
- Uyghur: ئاكا (ug) (aka) (elder), ئىنى (ini) (younger)
- Uzbek: aka (uz) (elder), uka (uz) (younger)
- Venetan: fradèlo, fradelo m, fradel m, german m
- Veps: veik
- Vietnamese: anh (vi) or anh trai (vi) (elder), em trai (vi) (younger), em (vi) (younger sibling - brother or sister), (brothers) anh em (vi)
- Volapük: blod (vo), (♂) higem (vo)
- Võro: veli
- Votic: velli
- Walloon: please add this translation if you can
- Welsh: brawd (cy), brodyr (cy) m pl
- West Frisian: broer (fy)
- White Hmong: kwv, tij, kwv tij, tij laug, nus
- Wolof: mag ju góor, ràkk ju góor, càmmiñ
- Xârâcùù: bé
- Xhosa: ubhuti, umntase, umnakwe
- Yagnobi: буродар (burodar), вирот (virot)
- Yakan: please add this translation if you can
- Yakut: убай (ubay), бий (biy), быраат (bıraat), ини (ini)
- Yámana: waym
- Yiddish: ברודער m (bruder)
- Yoruba: arakunrin
- Yucatec Maya: iitsʼin, sukuʼun
- Yup'ik: anngaq
- Záparo: kwiñu
- Zazaki: bra m
- Zhuang: beix (elder), nuengx (younger), beixneungx (brothers)
- Zulu: ubhuti (zu)
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