The neglect of the old house led to its decay.

The failure to care for someone or something properly.
His neglect caused the plant to die.
The neglect of duty was serious.
Neglect can lead to problems.
utter neglect
gross neglect
child neglect
inattention
oversight
indifference
Please do not neglect your studies.

to omit or disregard something intentionally or unintentionally
Do not neglect your health.
He neglected his duties.
She neglected the plant.
neglect duties
neglect studies
neglect health
ignore
disregard
forsake
He decided to neglect his studies and play video games instead.

to fail to care for or pay attention to someone or something
Do not neglect your health.
She neglected her plants.
He neglected to lock the door.
neglect duties
neglect responsibilities
neglect to mention
ignore
disregard
omit