Guilty of neglect; lacking due care or concern
He is nominally a Mahommedan, but is neglectful of the practices of his religion.
He sent far and wide in search of manuscripts, rescuing many treasures from the charge of ignorant and neglectful monks.
Though he was not blind to the commercial interests of England, he was neglectful of the administration and affairs of her oversea colonies.
Here his love of social pleasures made him neglectful of his studies, but he entered St John's College, Cambridge, in October 1766.
During this time Newton does not appear to have taken part in any of the debates in the House; but he was not neglectful of his duties as a member.