pensive
1. [ adjective ] persistently or morbidly thoughtful
Synonyms: reflective brooding meditative contemplative ruminative musing pondering broody
Related terms: thoughtful
2. [ adjective ] showing pensive sadness
Synonyms: wistful
Examples:

"the sensitive and wistful response of a poet to the gentler phases of beauty"

Related terms: sad
Similar spelling:   pensively