contemplative
kənˈtɛmplətɪv
adjective
expressing or involving prolonged thought.
she regarded me with a contemplative eye
thoughtful,pensive,reflective,meditative,musing,ruminative,introspective,brooding,intent,rapt,preoccupied,studious,deep/lost in thought,dreamy,daydreaming,with one’s head in the clouds,in a brown study
noun
a person whose life is devoted primarily to prayer, especially in a monastery or convent.