contemplative

Short definition from Wiktionary

Adjective

1. 1
   Inclined to contemplate; introspective and thoughtful; meditative.
2. 2
   Pertaining to a religious contemplative, or a contemplative religious orders, especially the Roman Catholic varieties.
3. 3
   Relating to, or having the power of, contemplation.
4. 4
   In a phase of mental activity in which one begins to recognize and acknowledge the maladaptiveness of someone's behavior (such as one's own, or that of a family member or friend); usually with reference to substance use.

Noun

1. 1
   Someone who has dedicated themselves to religious or philosophical contemplation.