fortuitous
🇺🇸
/fɔːrˈtuːɪtəs/
🇬🇧
/fɔːˈtjuːɪtəs/
occurring by chance, especially in a way that leads to a positive outcome
Finding the lost wallet was a fortuitous event for the person who found it.
找到丢失的钱包对找到它的人来说是个幸运的事件。