Antonyms of adj heedful

3 senses of heedful

Sense 1
heedful (vs. heedless), attentive, thoughtful, paying attention -- (taking heed; giving close and thoughtful attention; "heedful of the warnings"; "so heedful a writer"; "heedful of what they were doing")

heedless (vs. heedful), unheeding -- (marked by or paying little heed or attention; "We have always known that heedless self-interest was bad morals; we know now that it is bad economics"--Franklin D. Roosevelt; "heedless of danger"; "heedless of the child's crying")
        => careless (predicate), regardless -- ((usually followed by `of') without due thought or consideration; "careless of the consequences"; "crushing the blooms with regardless tread")
        => deaf (predicate), indifferent (predicate) -- ((usually followed by `to') unwilling or refusing to pay heed; "deaf to her warnings")

Sense 2
careful, heedful -- (cautiously attentive; "careful of her feelings"; "heedful of his father's advice")

INDIRECT (VIA mindful) -> unmindful, forgetful, mindless -- (not mindful or attentive; "while thus unmindful of his steps he stumbled"- G.B.Shaw)

Sense 3
advertent, heedful -- (giving attention)

INDIRECT (VIA attentive) -> inattentive -- (showing a lack of attention or care; "inattentive students"; "an inattentive babysitter")

Similarity of adj heedful

3 senses of heedful

Sense 1
heedful (vs. heedless), attentive, thoughtful, paying attention -- (taking heed; giving close and thoughtful attention; "heedful of the warnings"; "so heedful a writer"; "heedful of what they were doing")

Sense 2
careful, heedful -- (cautiously attentive; "careful of her feelings"; "heedful of his father's advice")
       => mindful (vs. unmindful), aware -- (bearing in mind; attentive to; "ever mindful of her health"; "mindful of his responsibilities"; "mindful of these criticisms, I shall attempt to justify my action")

Sense 3
advertent, heedful -- (giving attention)
       => attentive (vs. inattentive) -- ((often followed by `to') giving care or attention; "attentive to details"; "the nurse was attentive to her patient"; "an attentive suitor")