thoughtful

Synonyms: anxious astute attentive aware benign canny careful cautious charitable chivalrous circumspect civil concerned considerate cooperative courteous deliberate diplomatic discreet friendly gallant gracious heedful helpful indulgent kind kindly neighborly obliging observant observative observing polite prudent regardful responsive sensitive social solicitous tactful unselfish wary well-bred well thought-out

Antonyms: careless heedless inattentive inconsiderate uncaring unmindful unthoughtful

Synonyms: absorbed analytical attentive brainy calculating cerebral cogitative deep deliberative discerning earnest engrossed farsighted grave intellectual intent keen levelheaded logical lost in thought meditative melancholy museful musing pensive philosophic pondering preoccupied rapt rational reasonable reasoning reflecting reflective retrospective ruminative serious sober studious subjective thinking wise wistful

Antonyms: idiotic negligent obtuse remiss stupid thoughtless