What does 幸い mean?
幸い is a Japanese adjective meaning “fortunately; luckily” in English. It can also be translated as “luckily” depending on context. It is written as 幸い in kanji, さいわい in hiragana, and saiwai in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
あなたがここに居たのは幸いでした。
You were fortunate to be here.