- Albanian: belbëzoj (sq)
- Arabic: تَلَجْلَجَ (talajlaja), تَلَعْثَمَ (talaʕṯama)
- Egyptian Arabic: لدغ (ladaḡ)
- Armenian: կակազել (hy) (kakazel), թլվատել (hy) (tʻlvatel)
- Asturian: tartayar, tatexar, atartayar
- Azerbaijani: kəkələmək (az), pəltəkləmək
- Belarusian: заіка́цца impf (zaikácca)
- Bulgarian: заеквам (bg) impf (zaekvam), пелтеча (bg) (pelteča)
- Burmese: ဆွံ့ (my) (hcwam.)
- Catalan: quequejar (ca), tartamudejar (ca), titubar (ca), titubejar (ca)
- Cebuano: kanga
- Chinese:
- Hokkien: 大舌口, 大舌 (zh-min-nan), 重句 (zh-min-nan)
- Mandarin: 口吃 (zh) (kǒuchī), 結巴 / 结巴 (zh) (jiēbā), 磕巴 (zh) (kēbā), 漏口 (zh) (lòukǒu), 吶吶 / 呐呐 (zh) (nànà), 吞吐 (zh) (tūntǔ)
- Crimean Tatar: tutuqlanmaq
- Czech: koktat (cs) impf, zajíkat se impf
- Danish: stamme (da)
- Dutch: stotteren (nl), hakkelen (nl)
- Elfdalian: stotå
- Esperanto: balbuti
- Estonian: kogelema
- Faroese: stama
- Finnish: änkyttää (fi), takellella (fi)
- French: balbutier (fr), bégayer (fr)
- Galician: tatexar (gl)
- Georgian: ბლუ (blu)
- German: stammeln (de), stottern (de)
- Greek: τραυλίζω (el) (travlízo)
- Ancient: βατταλογέω (battalogéō)
- Greenlandic: ittoqerpoq
- Hebrew: גמגם (he) (gimgém)
- Higaonon: tagkangakanga
- Hindi: हकलाना (hi) (haklānā), लड़खड़ाना (hi) (laṛakhṛānā), हँकलाना (hi) (hãklānā), हिकलाना (hi) (hiklānā)
- Hungarian: dadog (hu), hebeg (hu)
- Icelandic: stama
- Ido: balbutar (io)
- Irish: beith ag stadaireacht
- Italian: balbettare (it), tartagliare (it)
- Japanese: 吃る (ja) (どもる, domoru)
- Kabuverdianu: gagixa
- Kazakh: кекештенуl (kekeştenul), тұтығу (tūtyğu)
- Khmer: ជាប់អណ្ដាត (coap ɑndaat), និយាយជាប់អណ្ដាត (ni’yiey coap ɑndaat)
- Korean: 더듬다 (ko) (deodeumda), 말을 더듬다 (mareul deodeumda)
- Kyrgyz: кекечтенүү (kekectenüü)
- Ladin: chechenië, cuchenië, cocogné
- Lao: ພ່ຳ (pham), ປາກພ່ຳ (pāk pham), ປາກບໍ່ຖອງ (pāk bǭ thǭng)
- Latin: balbutiō, friguttiō
- Latvian: stostīties
- Lithuanian: mikčioti
- Luxembourgish: tuddelen
- Macedonian: пелтечи impf (pelteči), д’тка impf (d’tka) (non-standard)
- Maori: mamamama, kikikiki, kīkiki
- Mingrelian: ბურდინა (burdina)
- Mongolian: ээрэх (mn) (eerex)
- Neapolitan: cacaglià
- Norman: aheuqu'ter, bégaûder
- Northern Sami: vavdat, vavddadit
- Norwegian:
- Bokmål: stamme (no)
- Nynorsk: stamma
- Old Church Slavonic: влъснѫти impf (vlŭsnǫti)
- Osage: ðéeze opásike
- Polish: jąkać się (pl) impf
- Portuguese: gaguejar (pt)
- Quechua: aklluykachay, aklluy, hanllay
- Romanian: bâlbâi (ro)
- Romansch: balbegiar
- Russian: заика́ться (ru) impf (zaikátʹsja), запина́ться (ru) impf (zapinátʹsja)
- Serbo-Croatian:
- Cyrillic: муцати impf
- Roman: mucati (sh) impf
- Slovak: koktať impf, zajakať sa
- Slovene: jecljati impf
- Sorbian:
- Upper Sorbian: jakotać
- Spanish: tartamudear (es), balbucir (es), balbucear (es), gaguear (es) (Latin America), tartajear (es), cancanear (es), tartalear (es) (rare)
- Sranan Tongo: gagu
- Swahili: gugumiza
- Swedish: stamma (sv)
- Tajik: сақав шуда мондан (saqav šuda mondan), лакнати забон доштан (laknat-i zabon doštan)
- Thai: ติดอ่าง (th) (dtìt-àang), อ่าง (th) (àang)
- Turkish: kekelemek (tr), pepelemek (tr)
- Turkmen: sakynmak, sakawlamak, kekeçlemek
- Tày: bử
- Ukrainian: заїка́тися impf (zajikátysja), затина́тися impf (zatynátysja)
- Uzbek: duduqlanmoq (uz)
- Vietnamese: nói lắp (vi), vấp lưỡi, cà lăm (vi)
- Welsh: cecian (cy), dydio
- West Frisian: stammerje
- Yiddish: שטאַמלען (shtamlen)
- Zazaki: kekezeyen
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