おっかなびっくり

adverb

fearfully; nervously; timidly; gingerly

Describes doing something while feeling scared or anxious, often with a sense of cautious hesitation. Related to おっかない (scary).

See also: おっかない

• おっかなびっくり暗くらい廊ろう下かを歩あるいた。

  I walked down the dark hallway fearfully.