1. (a.) Thoughtful, sober, or sad; employed in serious reflection; given to, or favorable to, earnest or melancholy musing.

2. (a.) Expressing or suggesting thoughtfulness with sadness; as, pensive numbers.

absent absentminded absorbed abstracted atrabiliar atrabilious bemused blue brooding castle-building cogitative cognitive concentrating concentrative conceptive conceptual conceptualized contemplating contemplative daydreaming daydreamy deliberating deliberative dreaming dreamy drowsing ecstatic elsewhere engrossed excogitating faraway funky grave half-awake ideative in a reverie in a trance in the clouds introspective lost lost in thought meditating meditative melancholic melancholy mental mooning moonraking museful musing napping nodding noetic oblivious pipe-dreaming pondering prehensive preoccupied rapt reflecting reflective ruminant ruminating ruminative sad saddened serious sober somewhere else speculative stargazing taken up thinking thought thoughtful transported tristful unconscious wistful withdrawn woolgathering wrapped in thought