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.To overlook or omit; disregard: as, the difference is so small that it may be neglected.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.. To cause to be neglected or deferred.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.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.n. Omission; oversight; the not doing a thing that should or might be done.n. Disregard; slight; omission of due attention or civilities.n. Negligence; habitual want of regard.n. The state of being disregarded.n. Synonyms Failure, default, heedlessness.n. 1, 3, and Remissness, etc. See negligence.Neglected.