This is the 4726th most frequent Russian word.
забывают
"Forget" (they forget).
The word 'забывают' is used to describe the action of consistently neglecting or not remembering their promises.
Они забывают о своих обещаниях.
They forget about their promises.
Here, 'забывают' refers to occasional forgetfulness in the context of closing the door.
Дети иногда забывают закрыть дверь.
Children sometimes forget to close the door.
In this sentence, 'забывают' illustrates the gradual loss of memory regarding past events.