いやあ

wow, oh

i j a̠ː → 否や
interjection Rare #26,867
wow, oh A conversational exclamation expressing surprise or admiration.
JA: いやあ、この映画は面白かったですね。
EN: Wow, that movie was interesting.

いやあめでたいめでたい

Well, this is something to celebrate!

— かぐや姫の物語 (2013)

いやあねえ表で楽しんできても家へ帰ると幻滅だな

It’s fun to put on a good show out in public, but coming home is such a letdown.

— 生きる (1952)

いやあ二郎らしいや

Wow, that’s so like Jiro.

— The Wind Rises (2013)

いやあ面白かったな

Wow, that was really interesting.

— The Wind Rises (2013)

そういやあそうだなあ

Come to think of it... yeah, that's true.

— Sanjuro (1962)

いやあまったくめでたいめでたい

Well, well—this is cause for celebration, indeed!

— かぐや姫の物語 (2013)

いやあ幸一もそうじゃった

Well, Koichi was like that too.

— 東京物語 (1953)

Sounds similar to