ruminative

adj

1. Causing rumination or prone to it; thoughtful.

   “They waited expectantly while he directed a ruminative yawn toward the white smiling moon.”

   “‘It happened,’ returned the man, with a ruminative air, as he drew his right hand across his chin, and dipped the other in the pocket of his rough outer coat, ‘it happened somewhere about here as I reckon. I don’t think it can have been a mile from here.’”

   “The ruminative 'cello uttered two phrases of its own and then began a dialogue with the viola.”

   “I found that the chore of reorganizing the artifacts of my professional life was pleasantly ruminative. It had a tonic effect, because it allowed me to reflect on the changes in my views over the years.”

2. Relating to or characteristic of ruminants; chewing the cud.