あれっ

Huh?, Oh?

interjection Rare #28,211
Huh?, Oh? An informal interjection expressing surprise or noticing something unexpected.
JA: あれっ、財布がない。
EN: Huh? My wallet’s gone.

あれっ

Huh?

— 崖の上のポニョ (2008)

あれっ?

Huh?

— 紅の豚 (1992)

おっあ…あれっ彩葉?

Oh—huh… Is that you, Iroha?

— Cosmic Princess Kaguya! (2026)

あれっ今ごろ気がついた?

Huh? You only just noticed?

— 魔女の宅急便 (1989)

あれっ誰だろう?

Huh, I wonder who that is?

— ハウルの動く城 (2004)

あれっあれっ?

Huh? Huh?

— 紅の豚 (1992)

あれっ何だ?

Huh? What is it?

— ハウルの動く城 (2004)