neglect

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To pay little or no attention to; fail to heed; disregard: neglected their warnings.
2. v. To fail to care for or attend to properly: neglects her appearance.
3. v. To fail to do or carry out, as through carelessness or oversight: neglected to return the call.
4. n. The act or an instance of neglecting something.
5. n. The state of being neglected.
6. n. Habitual lack of care.

Century Dictionary and Cyclopedia

1. To treat carelessly or heedlessly; forbear to attend to or treat with respect; be remiss in attention or duty toward; pay little or no attention to; slight: as, to neglect one's best interests; to neglect one's friends.
2. To overlook or omit; disregard: as, the difference is so small that it may be neglected.
3. To omit to do or perform; let slip; leave undone; fail through heedlessness to do or in doing (something): often with an infinitive as object.
4. . To cause to be neglected or deferred.
5. Synonyms Neglect, Disregard, Slight. Slight always expresses intention: it applies to persons or things. Neglect and disregard apply more often to things, and may or may not express intention; disregard is more often intentional than neglect. Only neglect may be followed by an infinitive: as, to neglect to write a letter; among things it generally applies to action that is needed, while disregard commonly applies to failure to heed or notice: as, to disregard counsel, a hint, a request, the lessons of experience, the signs of coming rain; to neglect a duty. See negligent and negligence.
6. n. The act of neglecting; the act of treating with slight attention, heedlessness, or disrespect some person or thing that requires attention, care, or respect.
7. n. Omission; oversight; the not doing a thing that should or might be done.
8. n. Disregard; slight; omission of due attention or civilities.
9. n. Negligence; habitual want of regard.
10. n. The state of being disregarded.
11. n. Synonyms Failure, default, heedlessness.
12. n. 1, 3, and Remissness, etc. See negligence.
13. Neglected.

Wiktionary

1. v. transitive To disregard or pay little attention to something.
2. v. transitive To fail to care for, or attend to something.
3. v. transitive To fail to do or carry out something due to oversight or carelessness.
4. n. The act of neglecting.
5. n. The state of being neglected.
6. n. Habitual lack of care.

GNU Webster's 1913

1. v. Not to attend to with due care or attention; to forbear one's duty in regard to; to allow to pass unimproved, unheeded, undone, etc.; to omit; to disregard; to slight
2. v. To omit to notice; to forbear to treat with attention or respect; to slight.
3. n. Omission of proper attention; avoidance or disregard of duty, from heedlessness, indifference, or willfulness; failure to do, use, or heed anything; culpable disregard.
4. n. Omission of attention or civilities; slight.
5. n. Habitual carelessness; negligence.
6. n. The state of being disregarded, slighted, or neglected.

WordNet 3.0

1. v. fail to do something; leave something undone
2. n. lack of attention and due care
3. n. willful lack of care and attention
4. n. the trait of neglecting responsibilities and lacking concern
5. v. give little or no attention to
6. v. fail to attend to
7. n. the state of something that has been unused and neglected
8. v. leave undone or leave out
9. n. failure to act with the prudence that a reasonable person would exercise under the same circumstances