nonimprovement

They achieve kindness in the short term but heartlessness in the long run, dooming the problem employee to nonimprovement.

Avoiding Conflicts, 2008

They achieve kindness in the short term but heartlessness in the long run, dooming the problem employee to nonimprovement.

Too-nice boss worsens matters 2008

Should these feeble efforts prove a saving of much time and expense to those young persons who may be disposed to pursue this science with avidity, by enabling them easily to acquire a critical knowledge of a branch of education so important and desirable, the author's fondest anticipations will be fully realized; but should his work fall into the hands of any who are expecting, by the acquisition, to become grammarians, and yet, have not sufficient ambition and perseverance to make themselves acquainted with its contents, it is hoped that the blame for their nonimprovement, will not be thrown upon _him.

English Grammar in Familiar Lectures Samuel Kirkham