- Aghwan: 𐕘𐔰𐕙𐔴𐕒𐕡𐕎𐕒𐕡𐕎 (ġareunun)
- Arabic: طُفُولِيّ m (ṭufūliyy)
- Armenian: երեխայական (hy) (erexayakan), մանկական (hy) (mankakan), տհաս (hy) (thas)
- Belarusian: дзіця́чы (dzicjáčy), інфанты́льны (infantýlʹny)
- Bulgarian: детински (bg) (detinski), инфантилен (bg) (infantilen)
- Chinese:
- Mandarin: 幼稚 (zh) (yòuzhì), 孩子氣/孩子气 (zh) (háiziqì)
- Czech: dětinský (cs)
- Dutch: kinderachtig (nl), infantiel (nl)
- Esperanto: infanaĵa
- Estonian: lapsik
- Finnish: lapsellinen (fi)
- French: puéril (fr), gamin (fr)
- German: kindisch (de)
- Greek: παιδιάστικος (el) (paidiástikos), παιδαριώδης (el) (paidariódis)
- Hebrew: ילדותי (he) (yalduti)
- Hungarian: gyerekes (hu)
- Ido: puerala (io), pueratra (io)
- Indonesian: kekanak-kanakan
- Irish: leanbaí, páistiúil
- Italian: infantile (it), bambinesco (it), puerile (it)
- Japanese: 幼稚 (ja) (ようち, yōchi), 子供っぽい (ja) (こどもっぽい, kodomoppoi), 子供じみた (こどもじみた, kodomo jimita)
- Khmer: ង៉ែត (km) (ŋaet)
- Latin: puerīlis
- Lithuanian: vaikiškas
- Macedonian: детински (detinski), детинест (detinest)
- Malayalam: ബാലിശ (ml) (bāliśa), ബാലിശമായ (ml) (bāliśamāya)
- Manchu: ᠵᡠᠰᡝᡴᡳ (juseki)
- Maori: ngākau pāpaku
- Middle English: childissh
- Norwegian:
- Bokmål: barnslig
- Nynorsk: barnsleg
- Old English: ċildisċ
- Old Norse: bernskr, bernskligr
- Persian: بچهگانه (bečče-gâne)
- Polish: dziecinny (pl), infantylny (pl)
- Portuguese: infantil (pt), imaturo (pt)
- Romanian: copilăros (ro), imatur (ro), pueril (ro), infantil (ro)
- Russian: ребя́ческий (ru) (rebjáčeskij), инфанти́льный (ru) (infantílʹnyj), де́тский (ru) (détskij)
- Slovene: otróčji (sl)
- Sorbian:
- Lower Sorbian: źiśecy
- Spanish: infantil (es), infantiloide, pueril (es), aniñado (es), niñato (es)
- Swedish: barnslig (sv), pueril (sv)
- Tagalog: isip-bata
- Turkish: çocuksu (tr), çocuğumsu (tr)
- Ukrainian: дитиня́чий (dytynjáčyj), дитя́чий (dytjáčyj), інфанти́льний (infantýlʹnyj)
- Welsh: plentynnaidd (cy)
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