interjection
what a blessing; how fortunate; thank goodness
An exclamation of gratitude or relief, often with a slightly old-fashioned or literary feel. Used when something fortunate happens or a difficulty is avoided.
ありがたや、無事に帰ってこれた。
Thank goodness, I made it back safely.
ありがたや、雨が上がった。
How fortunate, the rain has stopped.