heedful
     adj 1: taking heed; giving close and thoughtful attention; "heedful
            of the warnings"; "so heedful a writer"; "heedful of
            what they were doing" [syn: {attentive}, {thoughtful}]
            [ant: {heedless}]
     2: cautiously attentive; "careful of her feelings"; "heedful of
        his father's advice" [syn: {careful}]
     3: giving attention [syn: {advertent}]
Source: WordNet® 2.0