Oops

あら

ara

(acknowledging a minor mistake)

あら

ara

(used sarcastically to acknowledge a major mistake)

あらら

arara

(acknowledging a minor mistake)

おっと

otto

(acknowledging a minor mistake)

おっと

otto

(used sarcastically to acknowledge a major mistake)

おや

oya

(acknowledging a minor mistake)

しまった

shimatta

(acknowledging a minor mistake)

はあ

hā

(acknowledging a minor mistake)