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Denshi Jisho — Online Japanese dictionary

御芽出度 おめでたい 1: (Usually written using kana alone) (Polite language) special; auspicious; happy;
2: naive; innocent; good-natured
Ateji (phonetic) reading, Noun 
御芽出度 おめでとう congratulations!; an auspicious occasion!
Ateji (phonetic) reading, Interjection, Usually written using kana alone 

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