Adjective heedful has 3 senses
  1. heedful, attentive, thoughtful - taking heed; giving close and thoughtful attention; "heedful of the warnings"; "so heedful a writer"; "heedful of what they were doing"
    Antonyms: heedless, unheeding, careless, thoughtless, regardless, deaf, indifferent
  2. careful, heedful - cautiously attentive; "careful of her feelings"; "heedful of his father's advice"
    Antonyms: unmindful, forgetful, mindless (indirect, via mindful)
  3. advertent, heedful - giving attention
    Antonym: inattentive (indirect, via attentive)
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