ignorer

Example:She is one of the most heedful students in the class, always paying attention to her responsibilities.

Definition:Carefully attentive and responsive, especially to duties or other people; considerate and sensible.

Example:Being considerate is the opposite of ignoring others; he is always considerate of his colleagues.

Definition:Showing thought for the feelings and circumstances of others; considerate of other people's needs or feelings.

Example:An attentive listener is the opposite of an ignorer; she listens to every word carefully.

Definition:Showing or characterized by careful attention; being observant and responsive to details.