fall into, slide into / surrender / collapse, cave in, fall (i.e. castle)

indicates that something undesirable was done or happened

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

fall in, lapse into, yield to

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

To do something completely (unintentionally); cannot help doing

fall into, be caught in, trap / insufficient, mistake

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

sister city

the state or condition (of something at a certain time)