long-neglected russian

• запу́щенный

  neglected, uncared-for, unkempt, run-down

  advanced (of an illness), long-neglected

  launched, put into orbit

• застаре́лый

  chronic, long-standing, neglected (illness)

  inveterate, deep-rooted, ingrained

  outdated, obsolete, antiquated

Examples

• Этот запустелый парк давно не убирали.

  This neglected park had not been cleaned for a long time.

• Завоженный сад давно требовал ухода.

  The neglected garden had long been in need of care.