吃驚 びっくり
bikkuri

Adverb
Suru Verb

1. to be surprised; to be amazed; to be frightened; to be astonished; to get startled; to jump

Intransitive
Onomatopoeia
Usually Written in Kana
Pre-noun Modifier

2. surprise (e.g. surprise party)

Onomatopoeia
Usually Written in Kana
Other forms: