neglectful

adjective

1. characterized by neglect; disregardful; careless; negligent (often followed by of): neglectful of one’s health.

adjective

1. (when postpositive, foll by of) not giving due care and attention (to); careless; heedless

adj.1640s, from neglect + -ful. Related: Neglectfully; neglectfulness. Earlier in same sense was neglective (1610s).