neglected (adj.)

• abandoned
• deserted
• disregarded
• forgotten
• ignored
• missed
• overlooked
• run-down
• unacknowledged
• unasked
• uncared-for
• uncompleted
• unconsidered
• unconsummated
• undischarged
• undone
• unfinished
• unfulfilled
• unheeded
• unperformed
• unrealized
• unrecognized
• unrequited
• unrewarded
• unsolicited
• untended