- Albanian: seks (sq) m
- Arabic: جِمَاع m (jimāʕ), مُجَامَعَة f (mujāmaʕa), تَسَافُد m (tasāfud), سِيكْس m (sīks)
- Hijazi Arabic: سِكْس m (siks)
- Armenian: սեքս (sekʻs), սեռական հարաբերություն (seṙakan haraberutʻyun)
- Azerbaijani: seks (az), cinsi münasibət, sikişmə
- Belarusian: сэкс m (seks), секс m (sjeks), палавы́я зно́сіны f pl (palavýja znósiny), палавы́ акт m (palavý akt), пло́цевы акт m (plócjevy akt)
- Bengali: সেক্স (bn) (śekśo), যৌনসঙ্গম (jōunośoṅgom)
- Bulgarian: секс (bg) m (seks), полово́ сноше́ние n (polovó snošénie), съвокупле́ние n (sǎvokuplénie)
- Burmese: သံဝါသ (my) (sam-wasa.)
- Catalan: sexe (ca) m
- Chinese:
- Cantonese: 性交 (sing3 gaau1)
- Hokkien: 相姦／相奸 (zh-min-nan) (sio-kàn), 性交 (sèng-kau)
- Mandarin: 性交 (zh) (xìngjiāo)
- Czech: soulož (cs) f, styk (cs) m, pohlavní styk (cs) m, sex (cs) m
- Danish: sex (da), kønsliv, seksualliv, seksuel omgang, samleje (da), erotik
- Dutch: seks (nl) m, geslachtsgemeenschap (nl) m, vrijen (nl) n
- Esperanto: seksumo, amoro, amorado, koito, (vulgar) fiko
- Estonian: seks (et), suguühe (et)
- Faroese: kynslív n
- Finnish: seksi (fi), yhdyntä (fi)
- French: rapports sexuels (fr) m pl, sexe (fr) m, cul (fr) m
- Gagauz: sex
- Georgian: სექსი (ka) (seksi), სქესობრივი აქტი (skesobrivi akṭi)
- German: Sex (de) m, Geschlechtsverkehr (de) m
- Greek: συνουσία (el) f (synousía), έρωτας (el) m (érotas), σεξ (el) n (sex)
- Ancient: λαγνεία f (lagneía), πορνοκοπία f (pornokopía) (sex with prostitute), ἀφροδίσια n pl (aphrodísia), βίνος m (bínos) (vulgar)
- Greenlandic: atoqatigiinneq
- Gujarati: મૈથુન (maithun), સેક્સ (seks)
- Hebrew: יַחֲסֵי מִין (he) m pl (yakhaséy min) (literally: sexual relations), מִין (he) m (min), סֶקְס m (seks)
- Hindi: मैथुन (hi) m (maithun), संभोग (hi) m (sambhog), सहवास (hi) m (sahvās)
- Hungarian: szex (hu), közösülés (hu)
- Icelandic: kynlíf (is) n, mök (is) n pl, kynmök (is) n pl
- Ido: koito (io)
- Igbo: dinàkọ
- Indonesian: seks (id)
- Irish: bualadh craicinn, caidreamh collaí
- Italian: sesso (it) m
- Japanese: 性交 (ja) (せいこう, seikō), セックス (ja) (sekkusu)
- Kazakh: секс (seks), жыныстық қатынас (jynystyq qatynas)
- Khmer: ការរួមភេទ (kaa ruəm pheit)
- Korean: 성교(性交) (ko) (seonggyo), 성행위(性行爲) (ko) (seonghaeng'wi), 성관계(性關係) (ko) (seonggwan'gye), 섹스 (ko) (sekseu)
- Kurdish:
- Northern Kurdish: seks (ku), guhnelî (ku), perîn (ku), cotbûn (ku), têkiliyên zayendî (ku), (vulgar) gan (ku)
- Kyrgyz: секс (ky) (seks)
- Lao: ການຮ່ວມເພດ (kān hūam phēt), ປະເວນີ (pa wē nī)
- Latin: coitus m
- Latvian: sekss m
- Lithuanian: seksas (lt) m
- Macedonian: секс (mk) m (seks), полов однос m (polov odnos), сексуа́лен однос m (seksuálen odnos)
- Malay: seks
- Malayalam: ലൈംഗികബന്ധം (ml) (laiṅgikabandhaṁ), സംഭോഗം (ml) (sambhōgaṁ), മൈഥുനം (ml) (maithunaṁ)
- Maltese: sess m
- Marathi: कामजीवन (kāmjīvan), सेक्स n (seksa), संभोग (mr) m (sambhog)
- Mongolian:
- Cyrillic: хурьцал (mn) (xurʹcal), секс (seks)
- Mongolian: ᠬᠤᠷᠢᠴᠠᠯ (quričal), ᠰᠧᠻᠰ (sēks)
- Norwegian:
- Bokmål: sex (no) m, samleie (no) n
- Nynorsk: sex (nn) m, samlege f, samleie n
- Old English: hǣmed, leġertēam, wīfġemāna
- Persian:
- Iranian Persian: آمیزِش (fa) (âmizeš), آمیزِشِ جِنْسی (âmizeš-e jensi), جِماع (fa) (jemâ'), هَمْخوابِگی (hamxâbegi), سِکْس (fa) (seks)
- Polish: seks (pl) m, stosunek płciowy (pl) m, spółkowanie (pl) n, bara-bara (pl) n (jocular, colloquial)
- Portuguese: sexo (pt) m, transa (pt) f
- Romanian: relații sexuale f pl
- Russian: секс (ru) m (sɛks), полово́е сноше́ние (ru) n (polovóje snošénije), полово́й акт (ru) m (polovój akt), совокупле́ние (ru) n (sovokuplénije)
- Sami:
- Inari: seksi
- Northern: seaksa
- Skolt: seʹkss
- Serbo-Croatian:
- Cyrillic: се̏кс m, сексуални однос m, сполни однос m
- Roman: sȅks (sh) m, seksualni odnos m, spolni odnos m
- Sinhalese: ලිංගික සංසර්ගය (liṁgika saṁsargaya)
- Slovak: súlož f, sex (sk) m, pohlavný styk m
- Slovene: séks (sl) m, spolni odnos m
- Spanish: relaciones sexuales (es) f pl, sexo (es) m, (attributive) sexual (es) m or f
- Swahili: ngono (sw), tendo la ndoa
- Swedish: sex (sv) n, samlag (sv) n
- Tagalog: pagtalik, kantot (tl) (vulgar)
- Tahitian: aira'a
- Tajik: шаҳват (šahvat), секс (seks)
- Tamil: பாலுறவு (ta) (pāluṟavu), உடலுறவ (uṭaluṟava)
- Tatar: җенси якынлык (censi yakınlıq), коитус (qoitus)
- Telugu: సంభోగము (te) (sambhōgamu), మైధునము (te) (maidhunamu), రతి (te) (rati)
- Thai: เซ็กส์ (th) (sék), การร่วมเพศ (th) (gaan-rûuam-pêet), เพศสัมพันธ์ (th) (pêet-sǎm-pan)
- Tigrinya: ጾታዊ ርክብ (ṣotawi rəkb), ወሲብ (wäsib)
- Turkish: cinsel ilişki (tr), seks (tr), (biological term) çiftleşme, (vulgar) sikiş
- Turkmen: seks
- Ukrainian: лю́бощі pl (ljúbošči), секс (uk) m (seks), стате́ві зно́сини f pl (statévi znósyny)
- Urdu: سیکْس m (seks)
- Uzbek: jinsiy aloqa, shahvoniy (uz) (colloquial), seks (uz)
- Vietnamese: sự giao cấu (vi)
- Welsh: rhyw (cy) m or f
- Yiddish: סעקס m (seks)
- Zazaki: mınasebet, kelaz c
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