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(matter) for congratulations; worthy of celebration; happy (occasion, ending, etc.); joyous; auspicious
naive; too good-natured; gullible; foolish; simple
ご昇進とはお芽出度いことですね。
Congratulations on your promotion.
新年の集まりはお芽出度かった。
The New Year's gathering was a happy occasion.
この結果はお芽出度くないと感じた。
I felt this result wasn't something to celebrate.