Jisho

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Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no', Noun
1. innocent; naive; unsophisticated; inexperienced; green; wet behind the earsUsually written using kana alone, esp. 初, 初心
Noun, used as a prefix
2. birth-産, 生
Other forms
初心 【うぶ】産 【うぶ】生 【うぶ】

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