未熟|みじゅくmijuku[0]heiban (flat)

1. na-adjective, noununripe; green; immature
2. na-adjective, nounimmature; inexperienced; unskilled; green
   彼かれのフランス語ふらんすごの知識ちしきは未熟みじゅくだ。↗

   His knowledge of French is poor.

• Synonym稚拙ちせつNeutralChildish and clumsy, as in 「稚拙な絵」; focuses on crude, unpolished technique in creative works.
• Synonym幼稚ようちNeutralChildish, as in 「幼稚な考え」; stresses that someone's thinking is like a child's, rather than lack of skill.
• Synonym未成熟みせいじゅくNeutralA noun for something not yet mature, as in 「未成熟な果実」「精神的に未成熟」; leans toward written style, while 「未熟」 usually points to lack of skill or experience.
• Related若いわかいNeutralMeans young, or immature in thought as in 「考えが若い」. Colloquial and milder than 「未熟」.
• RelatedナイーブNeutralLoanword meaning pure and sensitive, as in 「ナイーブな性格」; in Japanese it usually suggests someone delicate and easily hurt.
• RelatedぎこちないNeutralDescribes stiff, awkward movement or expression, as in 「ぎこちない笑顔」; the emphasis is on the unnaturalness.
• Related未経験みけいけんNeutralMeans having no experience, as in 「未経験者歓迎」; it stresses that you have never done something, without judging your level.
• Related生煮えなまにえNeutralLiterally half-cooked food, as in 「生煮えのジャガイモ」; also describes vague, half-baked attitudes or plans.
• Related生熟れなまなれNeutralA rare word for shallow experience and unskilled technique; it can also mean salt-cured but unfermented sushi.
• Related大人げないおとなげないNeutralChildish, not befitting an adult, as in 「大人げない態度」; used mostly to criticize adults who act like children.
• Related半可はんかNeutralDescribes half-baked, superficial knowledge; mostly seen in the compound 「半可通」 and rarely alone.
• RelatedつたないNeutralMeans clumsy or of poor quality, as in 「拙い文章ですが」; often a humble, self-deprecating phrase, and leans toward written style.
• Related子供じみたこどもじみたNeutralUsed before nouns for something childish and laughable, as in 「子供じみた言い訳」; carries a derogatory tone.
• Related子供っぽいこどもっぽいNeutralChildish or childlike, as in 「子供っぽい服」; colloquial and mild in tone.
• RelatedすれてないNeutralColloquial expression for innocent and unsophisticated, as in 「すれてない子」; usually said approvingly.
• Antonym成熟せいじゅくNeutralAntonym: mature or ripe, as in 「成熟した大人」; the direct opposite of 「未熟」.
• Antonym円熟えんじゅくNeutralAntonym: mellow maturity of skill or character, as in 「円熟した演技」; the opposite of 「未熟」.

Use 「未熟」 for unripe fruit or insufficient skill and experience, as in 「未熟者ですが」「未熟な技術」. For childish thinking pick 「幼稚」, for clumsy works 「稚拙」, and for never having done something 「未経験」. For childish behavior, 「子供っぽい」 is mild and colloquial while 「大人げない」 criticizes adults. The opposites are 「成熟」 and 「円熟」, for mature skill and character.

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

1. 果物くだものや作物さくもつがまだ成熟せいじゅくしていないこと。
2. 学問がくもん・技芸ぎげい・修養しゅうようなどの経験けいけん・修練しゅうれんがまだ十分じゅうぶんでないこと。
3. 果物くだものや作物さくもつがまだ成熟せいじゅくしていない。
4. 学問がくもん・技芸ぎげい・修養しゅうようなどの経験けいけん・修練しゅうれんがまだ十分じゅうぶんでない。