[n] a calm lengthy intent consideration [adj] persistently or morbidly thoughtful
brooding, broody, contemplation, contemplative, meditative, pensive, pondering, reflection, reflective, reflexion, rumination, ruminative, thoughtful, thoughtfulness
absence of mind, absent, absentminded, absentmindedness, absorbed, absorption, abstracted, abstractedness, abstraction, advisement, bemused, bemusement, brooding, brown study, castle-building, close study, cogitative, cognitive, concentrating, concentrati