若い|わかいwakai[2]nakadaka (mid-high)

1. i-adjectiveyoung; youthful
   「彼女かのじょは若わかいですか」「はい」↗

   "Is she young?" "Yes, she is."
2. i-adjectiveimmature; green
3. i-adjectivelow (number); small

• Synonym若々しいわかわかしいNeutralDescribes a youthful look or air; used to praise someone, who need not actually be young.
• Synonym年少ねんしょうWrittenWritten or classificatory term for young age, as in 「年少者」; also the youngest kindergarten class.
• Synonym年若としわかWrittenWritten word for being still young, as in 「年若の娘」; not common.
• Synonym年若いとしわかいNeutralAn adjective stressing young age, as in 「年若い女性」; leans toward written style.
• Synonym若やかわかやかWrittenWritten and literary: looking young and brimming with youthful energy.
• Related幼いおさないNeutralUsually read 「おさない」; means very young or childlike, focusing on childlike smallness.
• Related未熟みじゅくNeutralCovers unripe fruit and, mainly, lack of skill or experience, as in 「未熟者」; about ability, not age.
• Related稚いいとけないWrittenYoung and innocent, with an old-fashioned literary flavor, as in 「いとけない子」; in everyday speech say 「幼い」.
• Related大人げないおとなげないNeutralCriticizes an adult for acting childishly, as in 「大人げない態度」; a rebuke, not a statement of age.
• Related未成熟みせいじゅくWrittenWritten word for body, mind or abilities not yet fully developed, as in 「未成熟な果実」.
• Related子供じみたこどもじみたNeutralSays an adult's words or behavior resemble a child's; derogatory, as in 「子供じみた真似」.
• Related子供っぽいこどもっぽいCasualColloquial and disapproving: someone no longer a child who still seems childish. 「若い」 is mainly about age, though it can also hint at immaturity.
• Related子どもらしいこどもらしいNeutralPositive: a child who is innocent and true to a child's nature — praise, not a comment on age.
• Antonym年寄りとしよりNeutralThe opposite: an old person (noun); addressing someone directly as 「年寄り」 can sound rude.
• Antonym老いたWrittenThe opposite of 「若い」: having grown old; written in tone.

Default to 「若い」 for being young in age. Use 「若々しい」 for a youthful look, 「幼い」 for being very young, 「未熟」 for inexperience, and 「大人げない」 or 「子供っぽい」 for childish adults. 「年若」「若やか」「稚い」「未成熟」「年少」 are written-style; 「子どもらしい」 praises a child's innocence. Antonyms: 「老いた」 (written) and 「年寄り」.

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

1. 生うまれてからあまり時間じかんが経たっていない。
2. できてからの年数ねんすうが少すくない。
3. 活力かつりょくに満みちている。
4. 考え方かんがえかたが未熟みじゅくである。
5. 番号ばんごうがちいさい。