attentive in WordNet English dictionary

1. (often followed by `to') giving care or attention
   "attentive to details"; "the nurse was attentive to her patient"; "an attentive suitor"
   attentive 
   
2. taking heed; giving close and thoughtful attention
   "heedful of the warnings"; "so heedful a writer"; "heedful of what they were doing"
   heedful  attentive  thoughtful  paying attention