bogging down

bog down

(product development) project

difficult / hard, probably impossible

project (planned endeavour)

muddy swamp; bog / the situation in which one is stuck (as if in a bog)

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

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

To do something completely (unintentionally); cannot help doing