lose one's presence of mind; panic

all of a sudden, all at once

sudden

suddenly

indicates that something undesirable was done or happened

sister city

traditional folk song of Amami / (more broadly) traditional folk song of Okinawa

To do something completely (unintentionally); cannot help doing

used in response to a failure or mistake: dang, shoot, darn it

to close / to finish, do something completely / to put away, to put an end to / is, or was (with conjugation), done completely / happens, or happened, unexpectedly / is done with difficulty