fortuitously
🇺🇸
/fɔːrˈtuːɪtəsli/
🇬🇧
/fɔːˈtjuːɪtəsli/
happening by chance, especially in a way that leads to a good result
He fortuitously found the lost keys in the park.
彼は偶然にも公園で失くした鍵を見つけた。