reflective in WordNet English dictionary

1. deeply or seriously thoughtful
   "Byron lives on not only in his poetry, but also in his creation of the 'Byronic hero' - the persona of a brooding melancholy young man";
   brooding  broody  contemplative  meditative  musing  pensive  pondering  reflective  ruminative 
   
2. capable of physically reflecting light or sound
   "a reflective surface"
   reflective 
   
3. devoted to matters of the mind
   "the reflective type"
   reflective