This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Characterized by neglect; heedless: neglectful of their responsibilities. See Synonyms at negligent.

adj. Tending to neglect; failing to take care of matters which require attention.

adj. Full of neglect; heedless; careless; negligent; inattentive; indifferent.

Characterized by neglect, inattention, or indifference to something which ought to be or is worthy of being done, attended to, or regarded; heedless; inattentive; careless: used either absolutely, or with of before the object of neglect: as, he is very neglectful; neglectful of one's duties.

Indicating neglect, slight, or indifference.

Synonyms Remise, etc. See negligent.

adj. failing in what duty requires

adj. not showing due care or attention

"Thus full of contradictions, unbending yet haughty, gentle yet fierce, tender and again neglectful, he by some strange art found easy entrance to the admiration and affection of women; now caressing and now tyrannizing over them according to his mood, but in every change a despot."

negligent   

careful   

careless    inattentive   

neglectfully    neglectfulness   

heedless    careless    negligent    inattentive    indifferent    disregardful    forgetful    derelict    culpose   

disrespectful    respectful   

inattentive    unappreciative    unloving    thoughtless    uncaring    improvident    negligent    unobservant    coldhearted    insensitive