児童|じどうjidou[1]atamadaka (head-high)

1. nounchildren; juvenile
   その学校がっこうの児童じどうはみんなその新あたらしい先生せんせいになついた。↗

   Every child in the school took to the new teacher.

• Synonym子供こどもNeutralThe everyday word for a child. 「児童」 is the formal term used in law (for under-18s) and in education, where it usually means elementary school pupils.
• Synonym小児しょうにWrittenA written term used mainly in medicine, as in 「小児科」; it covers infants through juveniles, with age limits that vary, while 「児童」 belongs to law and education.
• Synonym学童がくどうNeutralMeans elementary school pupils, or after-school care in 「学童保育」. 「児童」 is broader, legally covering anyone under 18.
• SynonymキッドNeutralA loanword for kid, seen mostly in nicknames and titles of works; not a usual way to refer to children in general. Say 「子供」 casually, 「児童」 formally.
• Synonym童子どうじWrittenA written word for a boy or page, seen in Buddhist and legendary contexts. 「児童」 is used in modern legal and educational settings.
• Related坊やぼうやNeutralAn affectionate word for a little boy, also used to mock a naive young man. 「児童」 covers both sexes and is neutral and formal.
• RelatedちびCasualColloquial for a pipsqueak or short person, said with affection or scorn. 「児童」 is a formal term free of emotional coloring.
• RelatedこわっぱWrittenA written word for a brat, contemptuous or teasing, usually a mischievous boy. 「児童」 is a neutral, formal label.
• Related鼻たれはなたれCasualColloquial for a runny-nosed kid, also a greenhorn; it carries contempt. 「児童」 has neither the derogatory tone nor this extended sense.
• Related童わらべWrittenA literary word for a child, found in children's songs and literature. 「児童」 is the modern formal term in law and education.
• RelatedちびっこCasualColloquial and affectionate for small children, as in 「ちびっ子広場」. 「児童」 is the unemotional, formal term.
• Related稚ややWrittenAn archaic word for babies and young children below school age, rare today. 「児童」 is the modern formal term, mostly for school-age children.
• Antonym大人おとなNeutralAn adult; it stands opposite the minor 「児童」 in age stage, as in 「大人料金」.
• Antonym成人せいじんNeutralAn adult or coming of age; it leans formal and stands opposite 「児童」 in age stage, as in 「成人式」.

「児童」 is the formal word for children in law and education: under 18 by law, mostly elementary pupils at school. In daily speech say 「子供」; in medicine 「小児」; for schoolchildren 「学童」. 「ちびっ子」, 「坊や」, 「禿び」, 「鼻たれ」 and 「小童」 are affectionate or derogatory nicknames; 「童」, 「童子」 and 「稚」 are literary or archaic; 「キッド」 appears in nicknames and titles. Opposites: 「大人」, 「成人」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 年少ねんしょうの人間にんげん。子供こども。
2. (児童じどう福祉法ふくしほうでの定義ていぎ) 年齢ねんれいが満まん18歳さいに満みたない者もの。
3. (学校教育がっこうきょういく法ほうでの定義ていぎ) 小学校しょうがっこう、初等部しょとうぶ、義務教育学校ぎむきょういくがっこうの小学部しょうがくぶ、特別支援学校とくべつしえんがっこうの小学部しょうがくぶに在学ざいがくする者もの。6歳さい～12歳さいの場合ばあいが多おおい。
4. (母子ぼし及および父子ふし並ならびに寡婦かふ福祉法ふくしほうでの定義ていぎ) 年齢ねんれいが満まん20歳さいに満みたない者もの。
5. (児童扶養手当じどうふようてあて法ほうでの定義ていぎ) 満まん18歳さいに達たっする日ひ以後いごの最初さいしょの3月がつ31日にちまでの間あいだにある者もの、または20歳さい未満みまんで政令せいれいで定さだめる程度ていどの障害しょうがいの状態じょうたいにある者もの。