expression
fortunately; luckily; thankfully
A set phrase used at the beginning of a sentence or clause to express relief that something turned out well. Often followed by a positive outcome.
幸いなことに、大きな事故にはならなかった。
Fortunately, it didn't turn into a major accident.
幸いなことに、彼はすぐに回復した。
Thankfully, he recovered quickly.
Also means 'luckily', but focuses more on chance or good fortune in a specific event, while 幸いなことに emphasizes the speaker's relief about a favorable outcome.
Antonym-like expression meaning 'unfortunately' or 'regrettably', used when something goes against one's hopes.
Derived from the adjective 幸い (さいわい, 'fortunate') + な (attributive form) + こと ('thing') + に (adverbial particle), literally 'in a fortunate thing'. The phrase became a fixed adverbial expression.