びっくり仰天ぎょうてん
bikkurigyōten

Noun
Suru Verb

1. astonished; stunned; startled out of one's wits; thunderstruck; open-eyed astonishment

そのニュースにかれはびっくり仰天ぎょうてんした。
sono nyūsuni karewa bikkurigyōten shita.
The news took him by surprise.
Other forms: